His first single for Aphex Twin's Rephlex label,[2] "Scharlach Eingang" (1994), published by Warner/Chappell Music, was sufficiently accomplished that the British music magazine NME ran an article claiming that Bochum Welt was another of Aphex Twin's myriad alter egos.
Di Costanzo's first album on Sony Music Japan,[3] "Module 2 / Desktop Robotics"[4] collecting his first recordings, was followed by a double CD Rephlex release Robotic Operating Buddy, nominated in 2009 as a top 15 electronica album by the British music magazine The Wire.
[6] Rephlex Records released his new full length in 2013, “Good Programs (To Be Coloured in Yellow)”,[7] as well as a collaborative EP with Heinrich Muller aka Gerald Donald from the Detroit group Drexciya, nominated in 2013 by Fact (UK magazine) in the 50 greatest 10″ records of FACT’s lifetime.
In 2019 and 2020 "Seafire", an album and remixes released by CPU Records / BMG, includes collaborations with Joshua Eustis and EOD.
In addition to releasing his own music, Di Costanzo has worked with Thomas Dolby's Headspace and Beatnik Inc., the Hollywood companies that completed multimedia productions for Steven Spielberg, David Bowie and others.