Some love songs sit politely in the corner. "When I'm With You" walks in with bright guitars, a racing heart, and that slightly ridiculous confidence people get when a crush rewires their whole day. Nick Pappalardo's new single, takes its spark from his early gigging days in Brooklyn and NYC, where one meeting with a Brooklyn girl gave him the emotional fuel for a full-on...

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...