In 2004, he co-starred with Petula Clark in a production of Lloyd Webber's "Sunset Boulevard" at the Cork Opera House, later broadcast by the BBC. Later the same year he was a guest star at Clark's Concert, also broadcast by the BBC. He sang three tracks from his latest album, "Since You've Been Gone"; "Home" and "One Voice", as well as two duets with Clark. Other performances include singing at the BBC's St David's Day concert, in the role of Marius at the "", the tenth anniversary concert of "Les Misérables" in 1995. A lyric baritone, Ball also sang the role of Valjean at a special concert performance of "Les Misérables" for the Queen and her guests at Windsor Castle in 2004. In 2005, with 10 days' notice, he replaced Michael Crawford as Count Fosco in "The Woman in White" after poor health forced Crawford to give up the role.