San Francisco's Turtle Island Quartet looks like any other well-scrubbed chamber ensemble, with one crucial difference: Onstage, the group can improvise like seasoned Blue Note veterans. Since forming in 1985, TIQ — violinist/founder David Bala­krishnan, violinist Mads Tolling, cellist Mark Summer and violist Jeremy Kittle — have cross-pollinated the classical repertoire with everything from bluegrass and bebop to Indian and Latin American folk... More >>>