Bondage & Discipline will be leaving the confines of Cambridge Sound Studios this evening, where the trio has been recording its debut album. The band, who originally came together as part of raucous indie-rock outfit The National Rifle, has left behind its beer-drenched, adrenaline-fueled past for a polished synth-pop sound that wanders through waves of longing. The bravado of the group’s previous life has been dismantled, leaving the band exposed but ready to unveil its next sonic adventure. Bondage & Discipline will be opening for LA dream-popsters Superhumanoids tonight at Johnny Brenda’s with Brooklyn’s Rush Midnight in tow. Johnny Brenda’s, 1201 N. Frankford Ave., 9pm, $12, 21+ (Photo by Jon Stars) – H.M. Kauffman