Bill March, Sam Romano and Ed Sarley warm up the jam.

Billy Sullivan and Ed Sarley rockin' hard.

Billy Sullivan and The ReBeats' Rick Montanari.

A happy jammin' crew. (l.-r.) Billy Sullivan, Ed Sarley, Sam Helton, Rick Montanari, Bob Stokes, George Sipl.

Ed Sarley, the affable host of The Mad Cactus Thursday Night Jam.

George Sipl and Billy Sullivan overtaken with glee.

George Sipl and Ed Sarley captured during a pause to refresh.

Rick Montanari and Tim Hamman caught up in a magic moment.

Sam Helton and Billy Sullivan goin' for that Liverpool sound.

Tim Hamman, Marla Z, and Bob Engleman finding a groove.