A MODERN
BIOGRAPHY ARCHIVE
THE COLLECTION / MusicARCHIVE № 110
1978 —   VIOLIST

RICHARDYONGJAEO’NEILL

Dec 31, 1978United States

What happened at what age?
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The year he turned 22, he made his debut as a soloist with the Los Angeles Philharmonic. He earned a bachelor’s degree at the University of Southern California and completed a master’s program at the Juilliard School. In 2001, he joined Sejong Soloists and visited Korea for the first time as a member.

The breakthrough yearThe year he turned 26, KBS’s Human Theater told the story of his mother’s family, and he became known in Korea.

In 2005, he was nominated for a Grammy for the first time. In 2006, his second album Nunmul (Tears) was the year’s best seller in both classical and international pop. He also played the children’s song “Seomjip Aegi,” which he had come across while learning Korean, for his mother, and put it on an album. In 2007, he formed Ensemble DITTO with Credia and became its music director, and began teaching at UCLA.

In 2008, he published the essay book Gonggam on his family history and appeared in a cameo in MBC’s Beethoven Virus. At the end of the year, he released the Baroque album Mysterioso and was named a special representative for the UNICEF Korea Committee. Ensemble DITTO grew into the Ditto Festival and ranked first in paid attendance at the Seoul Arts Center. In 2010, he was nominated for a Grammy for the second time.

In 2012, he formed the Hello?! Orchestra with children from multicultural families and became its music director and conductor. In 2013, a documentary about the orchestra won the International Emmy for arts programming, the first win for a Korean program. In 2015, he took part in the soundtrack of the film The Himalayas with Sumi Jo. In 2016, he played the complete Beethoven string quartets with the Ehnes Quartet and published an essay book on the experience.

In 2017, he held Ensemble DITTO’s 10th anniversary festival, “Carnival.” Two years later, Ensemble DITTO gave its final performance after 12 years. In 2020, he turned a planned recital into the COVID-19 hope concert “A Prayer for You” and joined the Takács Quartet as its new violist. The year he turned 43, he won the Grammy for Best Classical Instrumental Solo for a recording of Theofanidis’s viola concerto.

In 2022, he toured Korea for the first time since joining the Takács Quartet. In December 2023, he played the year-end concert “Gift: Baroque Melodies.” In 2024, he played a concerto for Sejong Soloists’ 30th anniversary, which was also 20 years since his Korean debut. In 2025, he visited Korea with the Takács Quartet and the soprano Park Hye-sang, and at year’s end gave a duo recital with the pianist Jeremy Denk. In 2026, he toured duo recitals with the pianist Park Jong-hae.

Richard Yongjae O’Neill (born Dec 31, 1978) debuted in 2000, the year he turned 22, as a soloist with the Los Angeles Philharmonic, and became known in Korea through KBS’s Human Theater in 2004, the year he turned 26. He won his first Grammy on Mar 14, 2021, the year he turned 43.

Ages are by calendar year (the year minus the birth year), birthdays aside.

Full timeline · 28 records2000 — 2026   +
AGE / YEAR

  1. 22 · 2000
    Debut

    Professional debut as a soloist with the Los Angeles Philharmonic

    Earned a bachelor’s degree (magna cum laude) from the University of Southern California and completed a master’s program at the Juilliard School. Studied with Paul Neubauer and Donald McInnes, and was the first violist admitted to the Juilliard graduate program.

    Source 01 · Namuwiki · Richard Yongjae O’Neill · opens in a new tabSource 02 · Korean Wikipedia · Richard Yongjae O’Neill · opens in a new tabSource 09 · Gangwon Ilbo (Korean) · Essay collection Richard Yongjae O’Neill’s Gonggam published · opens in a new tabSource 23 · Yonhap News Agency (Korean) · Richard Yongjae O’Neill: “A great day for the viola” · opens in a new tab The debut with the Los Angeles Philharmonic and its year are from Namuwiki and were not confirmed in news reports.
  2. 23 · 2001
    Joined

    Joins Sejong Soloists, first visit to Korea

    Joined Sejong Soloists, the chamber ensemble founded in 1994 by his Juilliard teacher Hyo Kang, and visited Korea for the first time that year as a member. He then spent six years with the ensemble as principal violist and soloist.

    Source 03 · Asia Economy (Korean) · Yongjae O’Neill on the lasting value of love and hope in music · opens in a new tabSource 05 · Newsis (Korean) · “Korea has been my musical home for over 20 years” · opens in a new tabSource 06 · Kukmin Ilbo (Korean) · “I can’t miss the Sejong Soloists’ 30th anniversary” · opens in a new tabSource 20 · Sports Seoul (Korean) · A special recital for his 15th anniversary since debut · opens in a new tab
  3. 27 · 2005
  4. 28 · 2006
  5. 28 · 2006
  6. 29 · 2007
  7. 29 · 2007
    Professor

    Joins the UCLA faculty

    Began teaching students at UCLA in the United States and remained on the faculty until 2016.

    Source 01 · Namuwiki · Richard Yongjae O’Neill · opens in a new tabSource 35 · MBN (Korean) · [Reporter Kim’s Culture Story] Richard Yongjae O’Neill visits Korea with the Takács Quartet · opens in a new tab The period of service (2007–2016) is from Namuwiki. In an MBN interview, he recalls taking the UCLA post around the time he was just starting Ensemble DITTO.
  8. 30 · 2008
    Book

    Publishes the essay book Gonggam

    Published the essay book Gonggam (Empathy), on his family history and his thoughts on music. The film director Park Chan-wook and others wrote recommendations.

    Source 08 · Yonhap News Agency (Korean) · <Richard Yongjae O’Neill’s Music and Life Story> · opens in a new tabSource 09 · Gangwon Ilbo (Korean) · Essay collection Richard Yongjae O’Neill’s Gonggam published · opens in a new tab The exact publication date was not confirmed. A Gangwon Ilbo article dated March 15 already treats it as published.
  9. 30 · 2008
  10. 30 · 2008
    Album

    Releases the Baroque album Mysterioso

    Released Mysterioso, played in the style of the 17th- and 18th-century Baroque era, with Alte Musik Köln. Around the same time, he was named a special representative of the UNICEF Korea Committee’s doll campaign.

    Source 12 · Yonhap News Agency (Korean) · “I took a beautiful Baroque journey” · opens in a new tabSource 14 · Newsis (Korean) · [Newsis Eyes] Richard Yongjae O’Neill visits Korean fans with his fourth album · opens in a new tabSource 13 · Newsis (Korean) · Song Seung-hwan: a rag doll saves a child · opens in a new tab
  11. 31 · 2009
  12. 32 · 2010
  13. 34 · 2012
  14. 35 · 2013
    Award

    Hello?! Orchestra wins an International Emmy

    A documentary about the orchestra won the International Emmy for arts programming in New York, the first win for a Korean program. Newsis reports it was a shared win with the British EMP production Freddie Mercury: The Great Pretender.

    Source 18 · MBC (Korean) · Hello?! Orchestra wins an International Emmy and opens as a film · opens in a new tabSource 36 · Newsis (Korean) · Producer Lee Bo-young: “Mothers should watch Hello?! Orchestra”: multicultural · opens in a new tab
  15. 37 · 2015
  16. 38 · 2016
    Concert

    Plays the complete Beethoven string quartets with the Ehnes Quartet

    Played all of Beethoven’s string quartets in six concerts over four days with the Ehnes Quartet, made up of the violinists James Ehnes and Amy Schwartz Moretti and the cellist Robert deMaine. He also published an essay book on the experience, Nawa Dangsinui Beethoven (My Beethoven and Yours).

    Source 26 · Maeil Business Newspaper (Korean) · Music that transcends 200 years: Beethoven’s “Fate” · opens in a new tabSource 19 · Money Today (Korean) · Yongjae O’Neill returns with Beethoven · opens in a new tab
  17. 39 · 2017
  18. 41 · 2019
  19. 42 · 2020
    Key moment

    Joins the Takács Quartet

    Joined as the new member when the Takács Quartet’s violist Geraldine Walther retired that May, when she was 70.

    Source 21 · Segye Ilbo (Korean) · “Realizing a dream of joining a great string quartet” · opens in a new tabSource 22 · JoongAng Ilbo (Korean) · Takács Quartet’s first Korean visit since adding Yongjae O’Neill · opens in a new tabSource 27 · Yonhap News Agency (Korean) · Takács Quartet: “Debate and experiment are the secret of 50 years” · opens in a new tab Korean outlets transliterate Geraldine Walther’s name slightly differently; Segye Ilbo and Newsis differ from Yonhap.
  20. 42 · 2020
    Concert

    COVID-19 hope concert “A Prayer for You”

    A recital marking 15 years since his debut had been planned, but it was changed into a hope concert for overcoming COVID-19 and held at the Seoul Arts Center Concert Hall. With the Ditto Chamber Orchestra he played Schubert’s Winterreise and pieces from the album Nunmul, and Kukmin Ilbo describes it as the first performance in Korean classical music to use distancing on stage.

    Source 20 · Sports Seoul (Korean) · A special recital for his 15th anniversary since debut · opens in a new tabSource 37 · Newsis (Korean) · [Interview] Yongjae O’Neill: “A concert to overcome COVID, thanks to those who seek music” · opens in a new tabSource 38 · Kukmin Ilbo (Korean) · [Exclusive] Seoul Philharmonic: first “distancing on stage” among Korean orchestras · opens in a new tab The “15th anniversary of debut” announced by Sports Seoul appears to count 2005 as the debut year, which differs from the basis used on this site: the Los Angeles Philharmonic debut (2000) and 2004, when he became known in Korea through Human Theater.
  21. 43 · 2021
    Key moment

    Wins the Grammy for Best Classical Instrumental Solo

    Won Best Classical Instrumental Solo at the 63rd Grammy Awards for a recording of the American composer Christopher Theofanidis’s viola concerto with the Albany Symphony Orchestra, conducted by David Alan Miller. It was his third nomination, after 2005 and 2010.

    Source 23 · Yonhap News Agency (Korean) · Richard Yongjae O’Neill: “A great day for the viola” · opens in a new tabSource 24 · Korea Economic Daily (Korean) · No Grammy for BTS, but “Dynamite” stage shines · opens in a new tab It was announced on the 15th, Korean time.
  22. 44 · 2022
  23. 45 · 2023
  24. 46 · 2024
    Concert

    Concerto for Sejong Soloists’ 30th anniversary

    Played a concerto with Sejong Soloists for the ensemble’s 30th anniversary. It was also 20 years since his Korean debut.

    Source 03 · Asia Economy (Korean) · Yongjae O’Neill on the lasting value of love and hope in music · opens in a new tabSource 06 · Kukmin Ilbo (Korean) · “I can’t miss the Sejong Soloists’ 30th anniversary” · opens in a new tabSource 29 · Edaily (Korean) · “Worried about classical fandom? I just want to connect people through music” · opens in a new tabSource 30 · Kookje Shinmun (Korean) · Yongjae O’Neill, Yu-jin Jang, In-mo Yang: classical stars pour in · opens in a new tab
  25. 47 · 2025
  26. 47 · 2025
  27. 48 · 2026

END OF SELECTED RECORDSSelected records, 2000–2026 · not a complete list of work. “Key moment” is an editorial label, not a measure of success.

02 / QUICK ANSWERS

Q & AFrequently asked

How old was Richard Yongjae O’Neill when he debuted?
In 2000, the year he turned 22, he debuted as a soloist with the Los Angeles Philharmonic, according to Namuwiki. He earned a bachelor’s degree at the University of Southern California and completed a master’s program at the Juilliard School.
How old was Richard Yongjae O’Neill when he became known in Korea?
In 2004, the year he turned 26, when KBS’s Human Theater told the story of his mother’s family. Earlier, in 2001, the year he turned 23, he first visited Korea as a member of Sejong Soloists.
How old was Richard Yongjae O’Neill when he won a Grammy?
In 2021, the year he turned 43, he won Best Classical Instrumental Solo at the 63rd Grammy Awards on Mar 14, 2021. The Korea Economic Daily reports it was his third nomination, after 2005 and 2010.
How old was Richard Yongjae O’Neill when he joined the Takács Quartet?
In 2020, the year he turned 42. He became the new member when violist Geraldine Walther retired that May, when she was 70.
How old is Richard Yongjae O’Neill?
Born in 1978, he turns 48 in 2026 (47 as of Sep 22, 2026).
04 / ABOUT THE ARCHIVE

A LIFE,
IN CHAPTERS.

What did they do, and at what age?
AgeTrail lines up the key moments of a life by age.
Debut and breakthrough are marked separately, and every record has a source.

COLLECTION110Richard Yongjae O’Neill / RICHARD YONGJAE O’NEILL

Music · United States
Dec 31, 1978 —

Sources and method38 SOURCES   +

Ages are counted from the birth year 1978: the year of the event minus 1978, birthdays aside. “Key moment” labels and the connecting story are AgeTrail's editorial reading.

  1. Namuwiki · Richard Yongjae O’Neill ↗Basis for items not confirmed in news reports, such as the 2000 debut with the Los Angeles Philharmonic and the 2007–2016 UCLA post
  2. Korean Wikipedia · Richard Yongjae O’Neill ↗Born Dec. 31, 1978, in Sequim, Washington; B.A. from the University of Southern California, master’s from the Juilliard School; teachers Paul Neubauer and Donald McInnes; 2021 Grammy at the 63rd awards
  3. Asia Economy (Korean) · Yongjae O’Neill on the lasting value of love and hope in music ↗Aug. 25, 2024: joined Sejong Soloists in 2001 and visited Korea for the first time that year; Grammy nominee in 2006 and 2010; led Ensemble DITTO for 12 years until 2019; with the Takács Quartet since 2020
  4. Hankook Ilbo (Korean) · Richard Yongjae O’Neill keeps taking on challenges ↗Oct. 3, 2022: first became known to the public through Human Theater; his mother was a Korean War orphan adopted by Irish-American grandparents
  5. Newsis (Korean) · “Korea has been my musical home for over 20 years” ↗May 8, 2025: first visit to Korea and joining Sejong Soloists in 2001, debut solo recital at Hoam Art Hall in 2004, five years with the Takács Quartet
  6. Kukmin Ilbo (Korean) · “I can’t miss the Sejong Soloists’ 30th anniversary” ↗July 28, 2024: made his Korean debut in 2004 as a member of Sejong Soloists; Sejong Soloists’ 30th anniversary; Aug. 27 concerto at the Hic et Nunc Music Festival
  7. Segye Ilbo (Korean) · “With thanks for the sacrifice and love of mothers” ↗Dec. 7, 2022: KBS Human Theater aired in 2004; his mother’s story; played “Seomjip Aegi” for his mother in 2006; joined the Takács Quartet in 2020
  8. Yonhap News Agency (Korean) · <Richard Yongjae O’Neill’s Music and Life Story> ↗Feb. 29, 2008: announcement of the essay book Gonggam; says Human Theater aired in 2005 (a different year from other articles); recommendations from the film director Park Chan-wook and others
  9. Gangwon Ilbo (Korean) · Essay collection Richard Yongjae O’Neill’s Gonggam published ↗Mar. 15, 2008: member of the Sejong Soloists, the resident ensemble of the Daegwallyeong International Music Festival; the first violist admitted to the Juilliard graduate program
  10. Yonhap News Agency (Korean) · Lim Dong-hyek and Yongjae O’Neill to appear in Beethoven Virus ↗Aug. 20, 2008: announcement of cameo appearances in an MBC drama
  11. Newsis (Korean) · Yongjae O’Neill becomes Kang Ma-e ↗Dec. 2008: appeared in Beethoven Virus in a cameo, conducting an amateur choral ensemble
  12. Yonhap News Agency (Korean) · “I took a beautiful Baroque journey” ↗Dec. 19, 2008: showcase for the Baroque album Mysterioso, recorded with Alte Musik Köln
  13. Newsis (Korean) · Song Seung-hwan: a rag doll saves a child ↗Mar. 21, 2008: used to confirm his age (30); took part in the UNICEF doll campaign
  14. Newsis (Korean) · [Newsis Eyes] Richard Yongjae O’Neill visits Korean fans with his fourth album ↗Dec. 30, 2008: named special representative of the UNICEF Korea Committee’s doll campaign; second album Nunmul (Tears), third album Winter Journey, fourth album Mysterioso
  15. Newsis (Korean) · Ensemble DITTO turns 10; June festival “Carnival” ↗Feb. 28, 2017: formed Ensemble DITTO with Credia in 2007; grew into the Ditto Festival in 2009; No. 1 in paid attendance at the Seoul Arts Center in 2008–2009; 10th anniversary festival from June 14 to July 2
  16. Yonhap News Agency (Korean) · O’Neill ahead of DITTO’s last performance ↗June 17, 2019: press conference ahead of Ensemble DITTO’s final performance
  17. Yonhap News Agency (Korean) · <New book> A Life in the Barley Field ↗May 6, 2013: introduces a book on the founding of the Hello?! Orchestra; member auditions and the first performance in July 2012
  18. MBC (Korean) · Hello?! Orchestra wins an International Emmy and opens as a film ↗Nov. 27, 2013: International Emmy Award for arts programming, the first for a Korean program
  19. Money Today (Korean) · Yongjae O’Neill returns with Beethoven ↗June 13, 2016: essay book published; the Ditto Festival’s theme was “Beethoven: One Who Went Beyond Limits”
  20. Sports Seoul (Korean) · A special recital for his 15th anniversary since debut ↗Feb. 23, 2020: six years as principal violist and soloist of Sejong Soloists; the 2006 second album Nunmul was the best-selling classical and international pop album of the year; a recital announced for May 22
  21. Segye Ilbo (Korean) · “Realizing a dream of joining a great string quartet” ↗Sept. 29, 2022: joined the Takács Quartet in 2020; Geraldine Walther, with the quartet for 15 years, retired that May, when she was 70; six-city tour in October
  22. JoongAng Ilbo (Korean) · Takács Quartet’s first Korean visit since adding Yongjae O’Neill ↗Oct. 3, 2022: decision to join made in 2019, active with the quartet from June 2020; six-city tour from Oct. 4 covering Seongnam, Seoul, Ulsan, Incheon, Daegu and Daejeon
  23. Yonhap News Agency (Korean) · Richard Yongjae O’Neill: “A great day for the viola” ↗Mar. 15, 2021: age 43; 63rd Grammy Awards, Best Classical Instrumental Solo; recorded Theofanidis’s viola concerto with the Albany Symphony led by David Alan Miller; led Ensemble DITTO for 12 years until 2019; the first violist admitted to the Juilliard graduate program
  24. Korea Economic Daily (Korean) · No Grammy for BTS, but “Dynamite” stage shines ↗Mar. 15, 2021: won on his third nomination, after 2005 and 2010
  25. Korea Economic Daily (Korean) · Sumi Jo and Richard Yongjae O’Neill join The Himalayas OST ↗Dec. 16, 2015: OST digital release
  26. Maeil Business Newspaper (Korean) · Music that transcends 200 years: Beethoven’s “Fate” ↗Dec. 25, 2015: the Ehnes Quartet (violinist James Ehnes, cellist Robert deMaine, violinist Amy Schwartz Moretti) to play the complete Beethoven string quartets in six concerts over four days: June 25, 26, July 1 and 3, 2016
  27. Yonhap News Agency (Korean) · Takács Quartet: “Debate and experiment are the secret of 50 years” ↗May 3, 2025: visiting Korea in May with the soprano Park Hye-sang; active with the quartet since 2020 after violist Geraldine Walther retired
  28. Gangwon Domin Ilbo (Korean) · Violist Richard Yongjae O’Neill’s “Baroque Gift” ↗Dec. 19, 2023: year-end concert “Gift: Baroque Melodies” at Gangneung Art Center
  29. Edaily (Korean) · “Worried about classical fandom? I just want to connect people through music” ↗July 29, 2024: formed Ensemble DITTO in 2007, Ditto Festival in 2009, disbanded in 2019; 20 years since his Korean debut and Credia’s 30th anniversary
  30. Kookje Shinmun (Korean) · Yongjae O’Neill, Yu-jin Jang, In-mo Yang: classical stars pour in ↗Dec. 18, 2024: 20th anniversary of his Korean solo debut; winner at the 63rd Grammy Awards
  31. News1 (Korean) · Bach, Beethoven, Berlioz: Richard Yongjae O’Neill’s first recital in six years ↗Sept. 25, 2025: “Richard Yongjae O’Neill & Jeremy Denk Duo Recital” at the Seoul Arts Center Concert Hall on Dec. 26
  32. Maeil Shinmun (Korean) · Richard Yongjae O’Neill on viola meets Park Jong-hae on piano ↗May 21, 2026: duo recital at the Cheongryong Hall of Dalseo Art Center in Daegu on May 26
  33. Daegu MBC (Korean) · Richard Yongjae O’Neill & Park Jong-hae Duo Recital ↗May 26, 2026: program including Bach’s Cello Suite No. 3 reinterpreted for viola
  34. Yonhap News Agency (Korean) · Richard Yongjae O’Neill’s 15th debut anniversary: the Ehnes Quartet visits Korea ↗Mar. 26, 2019: says he debuted with a solo recital at Hoam Art Hall in 2005 (a different year from other articles); visit with the Ehnes Quartet
  35. MBN (Korean) · [Reporter Kim’s Culture Story] Richard Yongjae O’Neill visits Korea with the Takács Quartet ↗Oct. 7, 2022: he recalls taking up running in mid-2006 or 2007, around the time he agreed to the UCLA professorship and was just starting DITTO
  36. Newsis (Korean) · Producer Lee Bo-young: “Mothers should watch Hello?! Orchestra”: multicultural ↗Nov. 28, 2013: won the International Emmy for arts programming in New York on the 25th, shared with the British EMP production Freddie Mercury: The Great Pretender; the film opened Nov. 28
  37. Newsis (Korean) · [Interview] Yongjae O’Neill: “A concert to overcome COVID, thanks to those who seek music” ↗May 14, 2020: “A Prayer for You” at the Seoul Arts Center Concert Hall on May 22; the recital planned for that day became a concert of hope for overcoming COVID-19; Schubert’s Winterreise and pieces from the album Nunmul; uses a different Korean transliteration of Geraldine Walther’s name
  38. Kukmin Ilbo (Korean) · [Exclusive] Seoul Philharmonic: first “distancing on stage” among Korean orchestras ↗May 25, 2020: Richard Yongjae O’Neill’s recital “A Prayer for You” and a Ditto Chamber Orchestra concert at the Seoul Arts Center Concert Hall on the 22nd, the first on-stage distancing in Korean classical music

Fact-checked: 2026.09.22 · An independent archive, not affiliated with the person or their agency.