JGB keyboardist Melvin Seals and Leftover Salmon/Great American Taxi guitarist Vince Herman will perform with the Colorado tribute act Shakedown Street this weekend. Seals and Herman will join Shakedown Street at Denver, CO’s Quixotes True Blue both tonight and tomorrow. The performances are part of Shakedown Street’s celebratory 25 Year Run. With Widespread Panic in the area and several other post-shows scheduled, there is always the possibility some additional guests will join in the action during the show.