Dover High Winter Guard Show

Okay, so, Dover HS is doing a winter guard show to this really good jazz-rock song. I believe the first word in ther title is "Get". Also, at the end it has a small sample of "In-A-Gadda-Da-Vida" by Iron Butterfly. The style is very Tom Jones/Blood, Sweat, & Tears/Blues Brothers-like (Trumpets, etc.).

Any ideas?

Try "Get it on" by Chase (1971)