The cast and producers behind the popular Fox show, which premiered in May after "American Idol" and is set to return for its new season in September, unveiled the second episode Saturday for thousands of fans at Comic-Con.
Future episodes will include songs from Van Halen, Barbra Streisand and the Rolling Stones and feature appearances by guest stars such as Kristen Chenowith, Josh Groban, Victor Garber and Eve, producers said. Expect three to seven songs an episode, they said.
Producers also announced that a soundtrack will be available in November and that the cast plans to visit 10 cities in the fall to meet fans andpromote the musical-comedy series.
Comic-Con continues through Sunday at the San Diego Convention Center.