The season premiere of ""MTV Unplugged"" features performances by British rockers Squeeze, solo artist Syd Straw, and Elliot Easton from The Cars. Musical highlights include Glenn Tilbrook and Chris Difford of Squeeze performing a rendition of their classic hit ""Pulling Mussels From The Shell,"" as well as a song from their new album Frank, ""She Doesn't Have To Shave."" The show is hosted by singer/songwriter Jules Shear. (The first episode of the season is an encore presentation of the pilot which aired November 26, 1989.) An excerpt from the MTV Unplugged book...""October 1989....Our coming-out party almost didn't come off at all. For rehearsals, Chris Difford and Glen Tilbrook of Squeeze showed up with electric guitars. We thought the title of the show said it all, but it turned out we needed to be a little more explicit in our instructions: Unplugged wasn't exactly part of the American vernacular at this point. But after we scrambled around town for a pair of acoustic guitars, the two w