Toto (stylized as TOTO) is an American rock band formed in 1977 in Los Angeles, California. Toto combines elements of pop, rock, soul, funk, progressive rock, hard rock, R&B, blues, and jazz. Having released 14 studio albums and sold over 40 million records worldwide, the group has received several Grammy Awards and was inducted into the Musicians Hall of Fame and Museum in 2009.David Paich (keyboards, vocals) and Jeff Porcaro (drums) had played together as session musicians on several albums and formed the band; David Hungate (bass), Steve Lukather (guitar), Steve Porcaro (keyboards, vocals), and Bobby Kimball (vocals) were recruited before the release of the band's eponymous debut album in 1978. Led by the Top 5 single "Hold the Line", the album brought the band to mainstream attention, though it was their fourth album Toto IV (1982) which brought them global attention. "Africa" topped the Billboard Hot 100, while "Rosanna" reached number 2, helping Toto become one of the best-selling music groups of their era.
Following Toto IV, two of the original members, Hungate and Kimball, departed the band. Hungate was replaced on bass by Mike Porcaro, while Kimball was replaced by a number of different short-term vocalists, the longest serving of which was Joseph Williams. After Jeff Porcaro's death in 1992, he was replaced by Simon Phillips. While the band has not repeated the U.S. radio successes of their heyday in the late 1970s and early 1980s, they have continued to produce albums and tour more-or-less continuously to the current day (minus a few hiatuses) and have had many more top-ten albums and singles in places like Japan and Scandinavia. Steve Lukather remains the only original member who still records and tours with the band (Paich also remains an official member of the band, though he has mostly retired from touring). Since the 2010s, the band has increasingly relied on contracted touring musicians to continue to perform. As of 2023, they have released fourteen studio albums, eight live albums, one movie soundtrack (1984's Dune) and a number of compilation albums. Their final release was 2018's Old Is New before the band eschewed recording any further studio albums.