The 11:30 PM concert will feature the talents of Jacques Brel's Constantine Maroulis, The Wedding Singer's Kevin Cahoon and jazz vocalist Julian Fleisher. Maroulis is scheduled to perform a few songs acoustically; Fleisher will sing several of his hit tunes; and Cahoon will offer a few songs from his new album. A Brooklyn native, Constantine Maroulis is a graduate of both the Boston Conservatory and the Berklee College of Music. He trained as an apprentice at the Williamstown Theatre Festival and appeared as Roger in a tour of Rent. In addition to his performances on "American Idol," he has also been seen on "Law & Order: SVU" and in several independent films. Maroulis also played a recent engagement at the Public Theater's Joe's Pub as well as a stint in The Wedding Singer. He can currently be seen Off-Broadway in the revival of Jacques Brel Is Alive and Well and Living in Paris.

Prior to The Wedding Singer, Kevin Cahoon was seen on Broadway as the Child Catcher in Chitty Chitty Bang Bang; his other Main Stem credits include The Rocky Horror Show, The Lion King and The Who's Tommy. Cahoon played the title role in Hedwig and the Angry Inch and was also seen Off-Broadway in The Foreigner. He and his band, Ghetto Cowboy, have also played CBGB's and Don Hill's.

Joe's Pub is located in Manhattan at 425 Lafayette Street. Tickets, priced at $25, are available by calling (212) 967-7555. Visit www.joespub.com for more information.