Until recently, Riya Mahesh’s biography hit nearly every beat of all-American academic achievement, following a familiar arc from early piano lessons to being crowned prom queen, like Olivia Rodrigo ’s well-adjusted Wario. But after hitting a snag and failing to get into Juilliard (happens…), the musician regrouped during the pandemic with a SoundCloud account, a trial run of Logic, and nothing to lose. As Quiet Light , the Texas-born, Boston-based producer has gone on to release multiple albums of increasingly accomplished art pop, along the way nabbing opening spots for Nilüfer Yanya , Chanel Beads , Ana Roxanne , and Hovvdy . Naturally, she’s managed all this while also powering through medical school. You can imagine the appeal that ambient music might have to a perennial over-achiever: the chance to zero in and zone out, to weigh conflict without solving it, to be guided by drift rather than drive.…