Ramah Darom alumnus Carl Haber and the Tufts University a cappella group the Beelzebubs gave Americans everywhere a cheerful wake-up with their performance on Good Morning America in September. The Beelzebubs became America’s sweethearts after appearing in the reality talent show, The Sing Off, where they sang their way to second place out of thousands of hopefuls in 2009.

In addition to his involvement with the  Beelzebubs, Carl also performs with the Ramah Darom a cappella group, Geshir. You can check out the GMA wake-up here.

Watch another of Carl’s performances here: