Munch On Some Tunes At Desi's Alternative/original Act Munch Will Perform Saturday At Desi's Rock Club, 625 Main Road, Dallas. In Addition To Original Material, The Band Performs Covers By Acts Such As Tonic, Better Than Ezra, Sublime, Bush, Alice In Chains And 311. Showtime Is 10:30 P.m. To 1:30 A.m. Cover Is $4. Info: 675-7000.