Col. Bruce Hampton, above, and Medicine Tree will perform at 10 p.m. Friday, Dec. 20, at JJ’S Bohemia, 231 E. M.L. King Blvd. Hampton is a veteran artist who first came on the scene with the Hampton Grease Band. He’s fronted or been a part of several other bands, including Aquarium Rescue Unit, over the years and also voiced “Warren” on the TV show “Space Ghost Coast to Coast.” Admission is $10. Call 423-266-1400 for more information.