Horne will present selections from his chamber opera Three Lost Chords during the evening, which will also include appearances from Scotty the Blue Bunny and the Wau Wau Sisters; a peek at the upcoming film "Ready? OK!" starring Carrie Preston and Michael Emerson; and performances from the Nerve Ensemble's newest Vegas floorshow-inspired work The $trip, featuring choreography by Tiger Martina and music by Horne.

Among the artists slated for Leap 29 are Terrence Mann (Les Miserables), Kate Reinders (Wicked), Milena Govich (Cabaret) and Megan Lawrence (Pajama Game) as well as Caroline Worra, Natalie Weiss, Jessica Hershberg, Adrian Lidonni, Christine LaDuca and Brittany Murchie. The evening will also feature Valerie Geffner and Debra Barsha (composer of Radiant Baby), who will premiere a number written with Horne from one of their dream projects.

The band for Leap 29 will comprise Dave Berger on drums, Amy Kohn on accordion, Randy Redd on keyboard and vocals, Malcolm Gold on bass, Elizabeth Derham on violin and Horne on piano and vocals.

Lance Horne provided vocal arrangements for Little Women on Broadway. He has penned songs for Gypsy of the Year, the Actors Fund benefits and contributed to the Off-Broadway song-cycle Songs From an Unmade Bed (for which Mark Campbell penned lyrics) as well as Three Lost Chords and The $trip. His work has been presented at Joe's Pub, New York Theatre Workshop, The Juilliard School and Lincoln Center. Horne is a graduate of the Juilliard School.

Tickets for the 9:30 PM performance of Leap 29 are $20 and are available by calling (212) 967-7555 or by visiting www.joespub.com. Joe's Pub is located within the Public Theater at 425 Lafayette Street.

An after party, held in conjunction with Chip Duckett and SpinCycle at 1984 at The Pyramid Club (101 Avenue A), will follow the performance. Guests who mention the code "Leap" will receive a discounted admission for $5.