Reuniting this summer for the first time in nearly a decade, virtuosos Yo-Yo Ma on cello, Stuart Duncan on fiddle, Edgar Meyer on bass, and Chris Thile on mandolin will perform live at UC Berkeley’s Greek Theatre. The original Goat Rodeo Sessions, a 2011 double-Grammy winner, was the first step in this collaboration. The Greek Theatre concert, with guest vocalist Aoife O’Donovan, will feature all-new music from an eagerly anticipated release, out this spring.