2AM Club's debut album, "What Did You Think Was Going to Happen?," blurs the lines among pop, rock, funk and R&B, all of which are on display in lead single "Worry About You." A head-bobbing organ and danceable rhythm come courtesy of producers Eric "ET" Thorngren and former Talking Head Jerry Harrison. Meanwhile, Marc Griffin's soul crooning and MC Tyler Cordy's cool rhymes serve as dueling vocals and provide texture to the composition. The upbeat mood of the song nicely contrasts with its lyrics, which capture a man's incessant thoughts of a girl after their relationship has crumbled. The undeniably catchy tune brings to mind the classic harmonies of '80s pop/rock acts like Hall & Oates.