[1] Sommerville was born in Women's College Hospital in Toronto in 1962.
He was also principal horn of the Canadian Opera Company and Symphony Nova Scotia.
[3] Sommerville joined the Boston Symphony Orchestra as principal horn in 1998.
He is heard on recordings on CBC, Marquis,[5] Deutsche Grammophon, and Decca labels.
Sommerville inspired the creation of Elliott Carter's 2006 Horn Concerto, which he premiered with the Boston Symphony Orchestra in November 2007.