David Stackhouse, a.k.a. "Stack", is a vocal artist, songwriter, sideman, educator, and the creative force behind Boston's all-vocal rock band, Five O'Clock Shadow, a.k.a. "FOCS".

"AWW, THAT'S SO FREAKY!!!" - Joe Rogan (host of Fear Factor)

Stack's been singing in bands since 1982 when he was a freshman in high school.
In 1991 he graduated from Berklee College of Music, where he studied voice and songwriting. While he was there, he also began doing vocal improvisation and vocal percussion (making percussive, drum-like sounds with his mouth, a.k.a. "beatboxing")
…skills that have since set him apart as somewhat of a musical mutant.

"Is he gonna be alright???" - Conan O'Brien

Stack holds one microphone, and wears another mounted in an elastic strap around his neck. Stack uses two microphones because he does vocal percussion and vocal bass… at the same time! You could think of Stack as a one-man all-vocal rhythm-section. But he coined a simpler term for himself: "beatbass".

"pick(s) up where Bobby McFerrin left off, creating drum-machine beats, bass lines, and the occasional cymbal crash… Quite a trick." - Hayley Kaufman, Boston Globe

Stack has been doing beatbass since the mid-90s, but has gotten his most exposure through FOCS. Stack joined FOCS in 1998 as their vocal percussionist, but when Benni "Human Bass" Chawes left FOCS the following year, Stack took over on beatbass, and has been playing the dual role ever since.

"it's all voices, all the time, though you'll swear you hear drums and guitar" - Washington Post

Stack came to FOCS with a vision of the ultimate all-vocal rock band. With the right vocal arrangements, some techie wizardry, and enough loudspeakers, he hoped they could peel paint off walls. Stack became the primary songwriter and arranger for FOCS, with whom he co-produced 2 CDs, and won numerous Contemporary A Cappella Recording Awards, A Cappella Community Awards and nominations.

"the number one vocal pop band of the new millennium" - MTV Online

Stack has toured extensively with FOCS in the USA and abroad, including 3 tours of Japan. Numerous TV appearances include VH-1's "//break.through/", ABC Monday Night Football, FOX News, WB's Morning Show, and many more. Their long list of distinguished clients includes Panasonic, Clear Channel Entertainment, Cingular Wireless, Mohegan Sun, and The NFL Hall of Fame. And through FOCS's Vocal Challenge program Stack has presented workshops and master classes to thousands of music students from coast to coast.

"Stack… is a multi-tasker extraordinaire." - Sean Altman

Stack is now a full-time freelance musician. He still sings and performs beatbass part-time with FOCS, but he jams with lots of other musicians, too! Filling in as a sideman on beatbass is one of Stack's favorite pastimes. So whether you need the beat, the bass, or both, give Stack a try! And for some of the wildest vocal effects you've ever heard, or even just straight-up vocals and harmonies, Stack is equal to the task!!!

Stack also provides innovative educational workshops for students of all ages on topics such as songwriting, vocal improvisation, vocal percussion & beatbass, choral master classes, mixing live sound and effects, and more. References are available upon request.

"...the best musician I've ever met." - Bill Eddy, former FOCS bandmate