DENNIS is most widely known for his 50's musical sendup Nite Club CONFIDENTIAL, which he wrote and directed Off Broadway, on London's West End, and in L.A. Los Angeles Magazine said the show had "... Harmonies so cool you'd better wear mink!" and Theater Week Magazine labeled the show "the camp masterpiece of the cabaret musical genre.
Dennis has produced and arranged a CD for Manhattan Transfer's Cheryl Bentyne. He has also had two movements of his New England Suite premiered by the New Haven Symphony. He has arranged for a wide range of top performers, including Nell Carter, Johnny Cash, Elaine Stritch, Chita Rivera, Mimi Hines, Barbara Eden, Helen O'Connell and Eddy Arnold.