In the late 1980s, while continuing to sing throughout the United States, in such roles as Hoffman in The Tales of Hoffman, Lord Percy in Anna Bolena and Dick Johnson in La fanciulla del West, he was approached by Hal Prince to re-create the role of Ubaldo Piangi in Andrew Lloyd Webber's "The Phantom of the Opera" for its Los Angeles premiere. This would take Negrini through 8 years and over 3,000 performances of that role, in both Los Angeles and San Francisco.