[2] In 1980 Muenz was cast as Lancelot in the revival of Lerner and Loewe's Camelot with Richard Burton as King Arthur and Christine Ebersole as Guenevere.
When the show moved from the New York State Theater to the Winter Garden Theatre the following year, he stayed with the production, now sharing the stage with Richard Harris as Arthur and Meg Bussert as Guenevere.
[4] In 1983 he portrayed Cadet Dick Thorpe in George Gershwin and Sigmund Romberg's Rosalie at Town Hall with the New Amsterdam Theater Company.
[6] In 1990 Muenz portrayed the role of Samuel Cooper in Kurt Weill's Love Life at the American Music Theater Festival in Philadelphia.
In 1999 he stepped in to cover a few performances for Tom Wopat as Frank Butler in the Broadway revival of Irving Berlin's Annie Get Your Gun, portraying the role opposite Bernadette Peters.
[11] Muenz's other performing credits include appearances on three seasons of Garrison Keillor’s The American Radio Company of the Air, Jean-Luc” on Guiding Light, “Dr.
He has also appeared in several productions with the New York City Opera, including Bob in Wonderful Town,[13] File in 110 in the Shade,[14] Danilo in The Merry Widow,[15] and Sid in The Pajama Game,[16] the latter of which garnered him a Drama Desk Award nomination.