Bassist Regina Zernay and drummer/vocalist Fred LeBlanc ply their trade at the 2010 Jazz Fest

You never know who will drop in to help during a Cowboy Mouth show. In this case, it's Harry Shearer (on the left) from This Is Spinal Tap, The Simpsons, and public radio's LeShow. Cowboy Mouth rhythm guitarist Jonathan Pretus is on the right.

Bass power from Harry and Regina

Another drop-in for the Cowboy Mouth line-up at Jazz Fest was Mark Bryan (left), lead guitarist for Hootie and the Blowfish. Cowboy Mouth's regular guitarist, John Thomas Griffith, is on the right.