 The band's constant drummer Jeff Porcaro died of a heart attack on August 5, 1992, later revealed to be caused by "hardening of the arteries" due to cocaine use.After briefly considering disbanding, Toto later replaced Porcaro with Simon Phillips and returned to touring.The group continued as a four-piece throughout much of the 1990s, before reuniting with Kimball, Williams and Steve Porcaro in 1998 for a tour in promotion of the 20th anniversary compilation "Toto XX