Don't know how old the episode is but I just saw it over the weekend. Damn- Roger really was that dude...

Yes much more to Zapp than a talk box. I saw Roger and Zapp so many times in the 80's I can't remember. Always dynamic and entertaining. Mugg could play some of airthang. Helluva blues and jazz guitarist and rhythm player. Never heard him play lead though. He'd put the guitar down and walk across the stage, pick up a bass and bang out a few notes then hit the talk box.