Tommy Shannon is an American bass guitarist, who is best known as a member of Double Trouble, a blues rock band led by Stevie Ray Vaughan. Born in Tucson, Arizona, Shannon moved to Dumas, Texas when he was nine, where he originally started as a guitarist, though he started playing bass at the age of 21. He appeared with Johnny Winter at Woodstock in 1969. He later joined Double Trouble in 1981 and became a permanent member of Double Trouble until Vaughan's death in 1990. Shannon and bandmate Chris Layton later formed supergroups such as the Arc Angels.

The Progressive Blues Experiment is the debut album by American blues rock musician Johnny Winter. He recorded it in August 1968 at the Vulcan Gas Company, an Austin music club, with his original trio of Tommy Shannon on bass guitar and John "Red" Turner on drums. The album features a mix of Winter originals and older blues songs, including the standards "Rollin' and Tumblin'", "Help Me", and "Forty-Four".