Tomas Costanza is an American record producer, songwriter, and CEO of Killingsworth Recording Company (Los Angeles/New York). Born in Long Island, New York, he was first noted in the music industry as the lead singer and guitarist for his band Diffuser. In addition to being signed to the major label Hollywood Records in 2000, several of the band's songs were featured on various movie soundtracks including Freaky Friday and Mission: Impossible II.