There are a glut of TV talent shows out there — most with dud judges who have far more cleavage and cliches than knowledge. We love NBC’s “The Sing-Off.” No freaks, no sideshows, no celebrity hacks. Just amazing talent and discerning judges with substantive criticism and career advice to offer a cappella groups of all ages. After three seasons, it appears NBC won’t be renewing the show.

Indie singer/songwriter/Sing-Off judge Ben Folds and Boyz2Man crooner/Sing-Off judge Shawn Stockman have joined forces with Twitter fans to try and save the program.!/rdietz55/status/202874806700482560!/andrewjonsle/status/202925113916661762!/ToriIsHappy/status/202972047377317888!/ACappellaBlog/status/202964055374303233!/JenSchmahl/status/202953022224080899!/SaraLongtin/status/202955047217274880!/itsxkicktahh/status/202962217245753345!/shawnstockman/status/202421156492480514