Other works

Played Roger in the 2004 touring production of Rent.

Hedwig and the Angry Inch - played Hedwig.

Played Hedwig in 'Hedwig and the Angry Inch', an off-Broadway show.

Played Roger in the off-Broadway production of 'Rent'.

He played Jesus in "Jesus Christ Superstar" in 2000.

He was in the rock opera "Suburban Dreams" in 1999.

He's toured the world in Rent - the Las Vegas Review-Journal (2004) said the production was "greatly hurt" by his "bland performance".

Sings "Bohemian Rhapsody" on the album Killer Queen: A Tribute to Queen released by Hollywood Records on Aug. 9. His track will be the first on the disc to go to radio.

Appeared in productions of Hedwig & the Angry Inch and Macbeth.

In August, 2006, he and his band, including Jim Boggia, Marc Copely, Winston Roye, Daniel Mintseris, and Clancy, completed a highly successful Northeast US tour, with 14 shows in 15 days. The setlist included songs by Willie Nile, Jeff Buckley, Angie Aparo, and Constantine himself, as well as favorites from his American Idol appearance. The encore was his version of Bohemian Rhapsody, with the other band members singing backup.

Appeared in the Broadway musical "The Wedding Singer", based on the Adam Sandler movie of the same name. He took over from Matt Salvidar on September 8, 2006.

Completed seven (7) weeks in Jacques Brel is Alive and Living in Paris at the Zipper Theater (off-Broadway) on February 25, 2007.

On December 15,2007, performed a "stirring" National Anthem at Monster Park in San Francisco, CA at the 49ers/Bengals football game.

In June 2008, starred as Judas in the the Premier Theatre Company's production of "Jesus Christ Superstar;" with Joe Russo performing the role of Jesus.

Embarked on a solo tour across the northeast in February 2008, performing to sold-out venues in such cities as New York, Philadelphia, Arlington, and Richmond.

Appeared for two weeks in August 2008 at the Rrazz Room at the Nikko Hotel in San Francisco with the Idols In Concert, Directed by American Idol's Michael Orland. Also performing were Vonzell Solomon, R J Helton, David Hernandez and Frenchie Davis.

As of October 2008, took on the starring role of Drew Dillenbeck in the off-Broadway production of the 1980s themed rock musical, "Rock of Ages."

(2009) Starred in Rock of Ages, which moved from "off" to Broadway in April 2009. The show was nominated for 5 Tonys, including one for Maroulis as Leading Actor in a Musical.