Five O'Clock Shadow
a.k.a. "FOCS" is Caleb, Paul, Oren, Stack, and Dan.
An all-vocal rock band from Boston, MA, FOCS began in 1991 as a traditional a cappella group. Since then an eclectic mix of 21 members has comprised multiple generations of the quintet. Over the years FOCS released 4 cassettes (back when people actually bought cassettes) and 5 CDs, and gradually morphed into a rock band. But they still leave the instruments off the stage, because they're a vocal group at the core.
Five O'Clock Shadow's Web Site