Dennis participated in such international festivals and competitions like "Millau en Jazz" (France), "Fel du Sher" (France), "Jazz A Vienne" (Viena), Alfa Jazz Fest (Ukraine) and many others.
In 2007 Adu won the "Do#Dæ Junior" (The Best Trumpet Player), in 2009 on this competition he became the winner in nominations "The Best Musician in Ukraine" and "The Best Arrangement of Jazz Standard".
Dennis took lessons from Alex Sipiagin and Joe Magnarelli. He played with Ku-umba Frank Lacy, Gregory Porter, Curtis Fuller, Jim Rotondi, Roy and Ofer Assaf, Steve Slagle, Javon Jackson, Larry Willis, Quincy Davis, Dana Hall, Jason Brown, Jimmy Bosch, Mitch Froman, Pete Nater, Frankie Vasquez, Wayne Escoffery, Michael Dease, Mambo Legends Orchestra, Seamus Blake, John Hollenbeck, and other.
Since 2012 he leads the Quintet, Sextet, Septet and Big Band.
information, photo from the official site: http://dennisadu.com/