Boyd Tinsley is the violinist and one of the backup singers in the American jam band the Dave Matthews Band.
As a teenager, Tinsley took part in forming the Charlottesville-Albemarle Youth Orchestra, in which future Dave Matthews Band member and bassist Stefan Lessard also took part. He studied under Isidor Saslav, concertmaster of the Baltimore Symphony Orchestra. He attended the University of Virginia and while there, he started having regular jam sessions that would last all night. In the early 1990s, he formed the Boyd Tinsley Band, which lasted only a couple years. In 1991 he was asked by Dave Matthews to play the song “Tripping Billies” with his band on their demo tape. Tinsley eventually joined the band and has been with them ever since. Aside from playing in the Dave Matthews Band, Tinsley does modeling for corporations such as JanSport and Tommy Hilfiger. In 2003, Tinsley released a solo album, “True Reflections,” featuring the title track he wrote over a decade earlier.
Source - Wikipedia
http://en.wikipedia.org/wiki/Boyd_Tinsley