Billy Corgan's post-Pumpkins career is kicking off with something entirely new to the alt-rock marvel — a waltz.

The former Smashing Pumpkins frontman will join Wilco's Jeff Tweedy, Marianne Faithfull and a host of others at the Third Waltz, a benefit show for a Chicago charity that assists homeless children.

The Jayhawks' Gary Louris, Cheap Trick's Bun E. Carlos, Ivan Neville, Sonia Dada and Otis Clay will also be performing at the fund-raiser, set for March 22 at the Metro.

All of the guest musicians will be performing one or two songs with the Nicholas Tremulis Band, organizers of the event since its 1999 inception. The First Waltz was inspired by the Band's famous farewell concert, the Last Waltz, which brought together musicians from an array of genres.

Corgan and his father, Billy Corgan Sr., Bob Mould, Chris Whitley, the BoDeans' Sammy Llanas, Cheap Trick's Rick Nielsen and Corey Harris have performed at past Waltz benefits, which have been heavy on collaborations.

The Nicholas Tremulis Band has released two critically acclaimed soul albums on Island Records, and has worked on albums by Bonnie Raitt, Tina Turner, Marianne Faithfull, Ivan Neville, Joe Cocker and Maceo Parker.

Third Waltz performers are donating their services, according to organizers, and all profits will be donated to the Heartland Alliance's Neon Street Program for Homeless Youth. Tickets are $30 and go on sale Saturday. Additional information is available at www.thewaltz.com.

Celtic fiddle legend Liz Carroll, the J. Davis Trio's Julio Davis, Jon Langford, Alejandro Escovedo, composer David Amram, harmonica virtuoso Howard Levy, and Frisbie's Steve Frisbie and Liam Davis also will be performing.

Corgan, a Chicago native, last took the Metro stage in December for the Smashing Pumpkins' final show (see "Pumpkins Circus Folds Up With Epic Show").