CMT’s first foray into scripted TV proved short-lived. The music-driven cable network has canceled its first original sitcom, Working Class, after one season. “Unfortunately, CMT will not be pursuing a second season of Working Class,” a note posted today on the show’s Facebook page read. “We’re sad to see it go, but you can still catch Melissa Peterman in new episodes of The Singing Bee.” Working Class stars Peterman as a single mom trying to give her kids a better life by moving them to an upscale suburb. Ed Asner stars as the cranky, surly neighbor and co-worker. Word is the series, created by Jill Cargerman, is now being shopped to other networks, including TV Land. Working Class started off OK, drawing 1.2 million viewers and a .50 rating in adults 18-49 in its January premiere, but slipped subsequently during its run, which concluded with the first-season finale April 1.