According to their official website, the band members are heading to the studio to record their voices for an episode of the show, which should be televised in May, 2006.
Metallica joins a number of artists who have been featured on the show including Blink-182, Mick Jagger, ‘NSYNC, Red Hot Chili Peppers, Aerosmith, Elvis Costello, Sonic Youth, Cypress Hill, Smashing Pumpkins and Bette Midler.