Josh Groban will perform a medley of 25 TV theme songs during the 60th Primetime Emmy Awards, which will be held Sept. 21 in Los Angeles.

Among the themes Groban will perform selections from are "Friends," "The Simpsons" and "The Brady Bunch," says the show's executive producer, Ken Ehrlich. The entire TV theme list is being kept under wraps until the show airs, he says.

ABC will air the Emmys live to the east coast at 8 p.m.