Bill Frisell put together a string quartet for this contemplative set, playing guitar alongside Eyvind Kang on viola, Jenny Scheinman on violin, and Hank Roberts on cello. The two-part opuses “It’s a Long Story” and “Friend of Mine” both start as comforting pieces; during their second parts, they turn moody when Frisell’s writing deepens, the joyous tones of the quartet turning into mournful instrumental arrangements.