{{Music/Boston}} and {{Music/Journey}} may have arrived on the scene first, but there was no band that defined the {{AOR}} boom of the [[TheSeventies late seventies]] and [[TheEighties early eighties]] quite like Toto.

The nucleus of the group consisted of school friends David Paich (keyboards, vocals) Steve Porcaro (keyboards, vocals), Jeff Porcaro (drums, percussion) and Steve Lukather (guitars, vocals), all experienced session musicians and aspiring songwriters who had played on hundreds of records between them. They were soon joined by the dynamic lead vocalist Bobby Kimball and bass guitarist David Hungate, who would leave after their fourth album and be replaced by the third Porcaro brother, Mike. They're officially named after the dog from ''Film/TheWizardOfOz'', but stories went around for a long time that Bobby Kimball was actually a Cajun whose real name was Robert Toteaux and the band was named after him.

While the group's music incorporates HardRock, ProgressiveRock, {{Soul}} and {{Jazz}}, they are most commonly associated with the SoftRock and [=AOR=] categories. Indeed, they are often noted as the TropeCodifier for the latter genre; their keyboard-driven music combined with Kimball's soaring vocal and Lukather's slashing guitar arguably bridged the gap between Music/FleetwoodMac and {{Music/Foreigner}}.

Their greatest success was 1982's ''Toto IV'', which included the number one hit "Africa" and the number two hit "Rosanna" and won six Grammy awards for the band. Kimball left shortly after and the band's fortunes declined somewhat, but they found a semi-permanent replacement in the form of another school friend named Joseph Williams, son of the prolific film composer Music/JohnWilliams. In spite of Jeff Porcaro's death as a result of heart failure brought on by cocaine use in 1992, the band continues to perform today (with Jeff's drumming role taken over by Simon Philips), sometimes with Kimball and sometimes with Williams.

!!"I bless the tropes down in ''Aaaaaaaaafricaaaaaa...''"

* TheBandMinusTheFace: Depending on the perspective of the individual fan, any line-up that lacks Bobby Kimball supplying lead vocals.
* BandOfRelatives: The three Porcaro Brothers.
* BreakupSong: "I'll Be Over You," "Stop Loving You," "Hold The Line," "Pamela," "Without Your Love," and "Straight For The Heart" just to name a few.
* DarkerAndEdgier: ''Kingdom Of Desire''.
* GenreRoulette: Most in evidence on ''Toto IV'', which featured songs distinctly placed in the hard rock, rhythm and blues, pop rock and even world music categories.
* HeavyMithril: "St. George and the Dragon".
* IAmTheBand: Averted with Steve Lukather. When he realized that he was the only active founding member left, he disbanded the group (they later reunited, but that was only because Lukather eventually got more of the old members to return).
* TheManBehindTheMan: As prolific session musicians and songwriters, the band members were involved in some way or another with about half of all the records that came out of California during the late 1970s and early 1980s, and in their own way they defined what American pop music would be like at this time. Jeff Porcaro in particular is lauded for his influence as a drummer, and is considered to be the ''most recorded drummer in music history.''
* NewSoundAlbum: All of their albums were characterised by an [=AOR=] sheen, but ''Hydra'' saw the band attempting ProgressiveRock and ''Turn Back'' was strongly influenced by English HardRock groups like Music/{{Queen}} and Music/LedZeppelin.
* NobodyLovesTheBassist: David Hungate. Despite playing on their most successful albums he's less well-known than Mike Porcaro, who was in fact originally intended to be a founding member, according to Steve Lukather, but was kept out by executives with the band's record label, Creator/ColumbiaRecords, who wanted to retain the successful chemistry of the line-up from Boz Scaggs' critically acclaimed ''Silk Degrees'' album, as Hungate, Lukather and other members of Toto except for Kimball were Scaggs' backing band at the time.
** This was averted, naturally, with Mike Porcaro, who is very well-liked within and outside of the band.
* OneSteveLimit: Averted with Steve Lukather and Steve Porcaro, as well as with David Hungate and David Paich.
* OneWomanSong: "Rosanna" is their most famous; Steve Porcaro had briefly dated actress Creator/RosannaArquette and he dedicated the song to her, although Paich insists that it's not really about anyone in particular and Arquette's forename just happened to fit the chorus. Curiously enough, they've got a song with a woman's name ending in 'a' for the title on most of their albums ("Angela", "Rosanna", "Holyanna", "Lea", "Pamela", "Anna"), with one exception being "Melanie" from their Mindfields album.
* PowerBallad: "Africa" & "I Won't Hold You Back".
* RevolvingDoorLineup: The band had shifted between six-piece, five-piece and at one time, a four-piece line-up through their career, with members drifting in and out of the band (along with Jeff Porcaro's tragic death and Mike Porcaro's struggles with multiple sclerosis), with only Steve Lukather having stayed with Toto through all of its incarnations.
* StepUpToTheMicrophone: Frustrated by their inability to find a consistent lead singer, Steve Lukather took over sole lead vocal duties between 1992 and 1998. During their peak popularity, he, Steve Porcaro and David Paich usually had at least one song on each album that featured them singing lead.
* SelfTitledAlbum: Their first album (''Toto'') and their fourth album (''Toto IV''). Aside from these, all of their other albums had individual titles.
* SuspiciouslySimilarSubstitute: Fergie Frederiksen for Bobby Kimball; both were from Louisiana and before joining Toto, Frederiksen had been lead singer in a band (Le Roux) that grew out of the band that Kimball left (The Levee Band) so ''he'' could join Toto.
* TropeCodifier: For Album-Oriented Rock ([=AOR=]). Only ''{{Music/Boston}}'' and ''[[Music/{{Journey}} Infinity]]'' beat them to being the TropeMaker.