Dennis was born, April 3, 1962. A child prodigy, he began playing the drums when he was two. He became a professional musician at the age of ten when he performed in the Anchorage Community Theater's production of A Funny Thing Happened on the Way to the Forum.
Developing his craft in various playing situations, Dennis received numerous awards such as Who's Who in Music, 1979; National Endowment For The Arts Grant for Composition in 1983; and in 1992; Outstanding Alumni from the University of Nevada, Las Vegas.
While attending the University of Nevada, Las Vegas, he was 18 years old and one of the youngest members of a Las Vegas showroom orchestra. His Las Vegas show performances include the Tropicana's Follies Bergere on drums, and the Imperial Palace's Bravo Vegas on drums and bass.