A weekly bulletin on musical guests playing the five-nights-a-week late night talk shows (and SNL); set your TIVOs or DVRs, if you haven't already seen them… The Late Show with David Letterman, CBS Monday, April 6: Razorlight (original air date 03/11) Tuesday, April 7: Cursive (03/13) Wednesday, April 8: Bell X1 (03/17) Friday, April 10: […]