Cellist and viola da gamba player Sergei Istomin, educated partly in the U.S., has been active in various countries, including Canada, France, and Belgium. Istomin wrote a doctoral thesis on Tchaikovsky's Variations on a Rococo Theme. He appeared as a gambist on the album An Hour with C.P.E. Bach in 1999. His solo debut came in 2003 with Abel, Schenk, Telemann: Solos for viola da gamba. Istomin issued a recording of the Variations on a Rococo Theme, Op. 33 in 2019. In 2022, he released a recording of Bach's Sonatas for viola da gamba, BWV 1027-1029.