January 8, 2015 RollingStone.com By Kory Grow Carlos Santana, Nile Rodgers and Rush’s Geddy Lee also sit for chats on the public television show This month a new music-themed talk show will debut that flips the script and lets musicians choose their own interviewer. Speakeasy‘s first class includes Roger Waters, who chose TV journalist Bill Weir; John Mellencamp, who picked Rolling Stone founder Jann…