The Delta Sonics music takes a Chicago Blues base and seasons it with Swing, Delta, N’awlins R&B and some early Rock n' Roll . They were Westword’s best blues band in Denver the last six of eight years. The band made the semifinals in the Memphis (International Blues Challenge) in 2012. They have been featured at many of the major festivals in Colorado and Wyoming. 

Al Chesis supplies vocals & foot stomping showmanship but it's his harmonica playing that grabs you. He has been a Hohner endorser since 1992. He recently received a Lifetime Achievement Award from the Colorado Blues Society. Bob Pellegrino supplies the dazzling, slide guitar. Bob was the
Colorado Blues Society’s best slide guitar player in three years in a row. Rising bass star Alissa Chesis and Stefan Flores on drums ‘drive the bus’ and are a grooving rhythm section.

The Sonics have been the Mile Hi ‘go-to’ band for touring Blues national acts for 15 yrs. The band has backed national blues acts like Big Bill Morganfield, Steadyrollin' Bob Margolin, Ronnie Baker Brooks, Grammy-nominated Lurrie Bell, Grammy-nominated John Primer and the late Pinetop Perkins, & the late Bo Diddley.