Music history is full of object lessons in the perils—and the necessity—of perfectionism. The 1977 album “Rumours” was both Fleetwood Mac’s magnum opus and its undoing. The record was an inspiration for David Adjmi, the playwright behind “Stereophonic,” which follows a rock band over a full year spent fine-tuning the songs that will cement their fame and decimate their relationships. Peter (Tom Pecinka) is the headstrong guitarist; Diana (Sarah Pidgeon), his on-again, off-again girlfriend, is a singer coming into her own. The keyboardist, Holly (Juliana Canfield), and the bassist, Reg (Will Brill), are in a tempestuous marriage, with the drummer, Simon (Chris Stack), as an imperfect mediator. Two sound engineers, Grover (Eli Gelb) and Charlie (Andrew R. Butler), act as referees, hype men, and, occasionally, therapists.
Adjmi set the…