Harry Allen was born in Washington, D.C. in 1966, and was raised in Los Angeles, CA and Burrillville, RI. He received a Bachelor of Arts degree in music in 1988 from Rutgers University in New Jersey, where he currently resides.

Allen has over twenty recordings to his name. Three of Harry's CDs have won Gold Disc Awards from Japan's Swing Journal Magazine, and his CD Tenors Anyone? won both the Gold Disc Award and the New Star Award. His recordings have made the top ten list for favorite new releases in Swing Journal Magazine's reader's poll and Jazz Journal International's critic's poll for 1997, and Eu Nao Quero Dancar (I Won't Dance), the third Gold Disc Award winner, was voted second for album of the year for 1993 by Swing Journal Magazine's reader's poll.

Harry has performed at jazz festivals and clubs worldwide, frequently touring the United States, Europe, and the Far East. He has performed with Rosemary Clooney, Flip Phillips, Scott Hamilton, Harry 'Sweets' Edison, Kenny Burrell, John Pizzarelli, Bucky Pizzarelli, Gus Johnson, Jeff Hamilton, Terry Gibbs, Warren Vaché Jr., and has recorded with Tony Bennett, Johnny Mandel, Tommy Flanagan, Kenny Barron, and Dave McKenna, among others.

Harry is featured on many of John Pizzarelli's recordings including the soundtrack and an on-screen cameo in the feature film The Out of Towners starring Steve Martin and Goldie Hawn. He has also done a series of commercials for ESPN starring Robert Goulet.