Andy Hallett got his agent *after* he appeared for the first time on Angel. She spotted him singing and acting in the second season premiere episode, "Judgment." The morning after the show was broadcast she called up the BtVS/AtS casting agent and asked about him. He signed with her shortly thereafter.
According to an interview in the Cleveland Plain Dealer (April 24, 2003), "Buffy the Vampire Slayer" executive producer Joss Whedon had been friends with Andy Hallett and they liked to visit a "dirty, old scandalous" karaoke bar in Hollywood together; then Joss asked him to audition for the role of Lorne. Hallett joined the cast during the second season, but because he was unsure about how his flashy-dressing, green-faced character would be received, he kept his day job for an entire season.
Hallett told the Cleveland Plain Dealer (April 24, 2003) that he loved singing while growing up in Osterville, Mass., but negative peer pressure made him quit. Then, at a Patti LaBelle concert, she invited him onstage to sing "Lady Marmalade" with her. When he received applause and requests for photographs, he realized that "It was really a life-changing experience."
It took him two and a half hours to have the red-eyed, green-skinned, two-horned makeup applied for his role as Lorne on "Angel."
Fans of Hallett's crooning character Lorne on "Angel" have asked whether he is going to put out a CD; he has expressed interest and says that he has been approached by recording companies. [March 14, 2003]