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.

FOCS has toured extensively throughout the US and Japan. Numerous TV appearances include VH-1's "//break.through/", ABC Monday Night Football, FOX News, WB's Morning Show, A&E, ESPN, and many more. Five O'Clock Shadow also has a long list of distinguished clients like Panasonic, Clear Channel Entertainment, Mohegan Sun, and The New England Patriots. And through their Vocal Challenge program FOCS has presented workshops and concerts to thousands of music students from coast to coast.