Growing up changes the meaning of a late night. The Mack Brothers seize that feeling on “Sleepless in Seattle,” an indie rock single from Philadelphia brothers John and Matthew Mackara. The title comes from John’s own phrase for those anxious, can’t-switch-off hours, and the song’s stated concern is the friction between the past and the present. That premise hits hard because it is familiar without being...

TWOFEW’s new single, “Let It Go,” lands with the resonant thud of a heartfelt admission, the kind you only make when the room’s too loud to be properly heard. This Phoenix, Arizona quartet – Michael Lazar leading on vocals and keys, David Lazar wrestling with guitar, John Sebring on drums laying down a defiant pulse, and Danielle Lazar anchoring the low end on bass...