I’m working my way through all the episodes of “The Muppet Show” on Disney+ and I noticed that when a Muppet picks up a musical instrument, they almost always play left-handed. Kermit plucks banjo strings with his left flipper in “The Muppet Movie.” In The Electric Mayhem, Janice and Floyd hold their guitars like lefties, although Floyd’s sax grip looks like a rightie. (It’s tough to tell with drums and impossible with keyboards.) Scooter plays guitar to the left. Marvin Suggs plays the Muppahone with the mallet in his left hand. Even The County Trio – Muppets that look like, and are puppeted by, Jim Henson, Frank Oz, and Jerry Nelson – all play like southpaws.