Off-Broadway credits include The Spitfire Grill (Drama Desk nomination), Marry Me a Little, and Brownstone.  She also appeared in A Stephen Sondheim Evening, the legendary Follies in Concert at Lincoln Center, and Inside the Actor’s Studio: Stephen Sondheim. Regional and international credits include the one-person play Every Brilliant Thing, ‘Dot’ in Sunday in the Park with George, ‘Eva Peron’ in Evita, ‘Norma Desmond’ in Sunset Boulevard, and the European premiere of Sondheim on Sondheim at London’s Royal Festival Hall. Calloway sang the Academy Award^®–nominated song “Journey to the Past” in the animated feature Anastasia. Other film work includes ‘Jasmine’ in the two Aladdin sequels, The Swan Princess, Beauty and the Beast, and The Rewrite with Hugh Grant. Her extensive concert and symphony career has included appearances in London, Paris, Iceland, Vietnam, Australia, China, and nearly every major city in the U.S. She performs regularly with her sister Ann Hampton Callaway, as well as composer Stephen Schwartz, and has had the great pleasure of singing with Jimmy Webb, Paul Williams, and the legendary Johnny Mathis. Calloway has eight solo recordings, including her newest, To Steve With Love: Liz Callaway Celebrates Sondheim. www.lizcallaway.com @LizGoesOn

He has also enjoyed meaningful collaborations with Faith Prince, Liz and Ann Hampton Callaway, Jane Olivor, Melissa Errico, Karen Akers, Karen Mason, Sharon McNight, Jeff Harnar, Donna McKechnie, Jason Graae, Lee Roy Reams, Tovah Feldshuh, Rita Gardner, Roslyn Kind, and Amanda McBroom, among many others. His original song "What a Funny Boy He Is" was recorded by the late Nancy LaMott. He has received numerous awards and honors (MAC, Bistro, Nightlife, Billboard, and BroadwayWorld) as music director and songwriter.

Henn has played for Kathleen Turner, Liz Callaway, Ann Hampton Callaway, Len Cariou, Penny Fuller, Anita Gillette, Chuck Berry, Amanda McBroom and Michele Brourman, Karen Mason, Bob Malone, Tony Danza and more. He also whistles and plays the ukulele. See more at RittHenn.com.

In the mid-1980s, he began performing in a wide variety of Broadway shows from Barnum to Mamma Mia, Lion King, and an 11-year stint at CATS. Other long-running gigs have included Radio City Music Hall Christmas Spectacular (30+ years), holiday tours with the Boston Pops, and numerous concerts and recordings with Liz Callaway and Ann Hampton Callaway, since the mid-1990s. He is the author of The Melodic Snare Drummer and maintains a teaching studio at Good Hands Drum Shop in Manhattan.