Technically a sopranist[1] (sopranista or male soprano), he has also sung high tenor roles in theatrical productions in the United States, Canada, and Europe.
[2][non-primary source needed] He made his Broadway debut in The Roundabout Theatre Company's 2006 revival of Kurt Weill and Bertolt Brecht's The Threepenny Opera in the role of Lucy Brown.
[3][4][5] As a tenor, he played Tony on a European tour of the American musical West Side Story.
[6] In 2013, as a pop-rock singer-songwriter, he began performing original material in concert venues in New York City.
[8] Rooney's recent ventures in concert performance and production in New York City have been greeted positively.