* Music/DireStraits's "Money For Nothing" is well known for the background singing that Music/{{Sting}} does in it. You know, "[[{{MTV}} I want my emmmmmmmm teeeeeeee veeeeeeeeeee.......]]" (in the same tune of "[[Music/ThePolice Don't Stand So Close To Me]]")
* Rockwell's hit "Somebody's Watching Me" featured [[MichaelJackson Michael]] (notably in the chorus) Jackson.
* Music/TomWaits pitch-perfect turn as Tommy in {{Primus}}' "Tommy the Cat".
* Music/{{Queen}}: Music/DavidBowie joining up for "Under Pressure". Steve Howe playing a relatively short (compared to Music/{{Yes}} and Asia standards) flamenco guitar solo on "Innuendo", which has become a classic and one loads of people around the world try to learn and replicate (oddly appropriate given that Brian May asked Steve to do it because he couldn't manage it). Also, the half-minute operatic section on "'Bohemian Rhapsody" is arguably one of the first things people recall about Queen in spite of being very different to 99% of things the band did before or since.
* On the Music/FrankZappa album ''Broadway the Hard Way'', Sting comes on halfway through and performs "Murder by Numbers".
* Music/WeirdAlYankovic did his pastiche of Zappa, "Genius in France," for the album ''Poodle Hat'', who did he get to provide solos satisfactorily remiscent of Frank's? Dweezil. [[ViewersAreGeniuses Return Of The Son Of]] FrankZappa.
** And when he recorded a parody of Music/TheDoors ("Craigslist") for the ''Internet Leaks'' EP, he enlisted none other than Ray Manzarek to contribute the keyboard parts.
** On "Mr. Popeil" (''In 3-D''), Lisa Popeil, daughter of Sam Popeil (on whom the song is based) and half-sister to Ron Popeil, sings the backup vocals.
** On "Taco Grande" (a parody of Gerardo's "Rico Suave" which appears on the album ''Off the Deep End''), [[Creator/CheechAndChong Cheech Marin]] provides a Spanish spoken-word bridge.
** Creator/MaryKayBergman performs less than two seconds of "Pretty Fly For A Rabbi" on ''Running With Scissors''. Specifically, the "for a rabbi" before the second verse.
* [[TheEighties 80's]] pop singer Tiffany had a surprise guest appearance by rapper [[Music/BoneThugsNHarmony Krayzie Bone]] on the song "I'm Not Sleeping," on her 2001 "come back album" Color Of Silence''.
* [[Music/GunsNRoses Slash's]] guitar solos on Music/{{TLC}}'s "Red Light Special" song.
* Music/BoneThugsNHarmony's guest appearance on Music/MariahCarey's ''Butterfly'' album, the most jarring however being ODB on her previous record.
* Anytime two highly acclaimed rappers team up, and make a legendary memorable collaboration.
** Bone appearing on Biggie's "Notorious Thugs" track, which is considered a classic.
** 2pac appearing on Bone's "Thug Luv" track months after he died.
** Phil Collins showing up in Bone's music video for "Home".
** Nas and AZ appearing together on the track "Life's A Bitch" on the classic ''Illmatic'' album
** Jay-Z on Biggie's "I Love The Dough" song from his ''Life After Death'' cd.
** Music/{{Eminem}} on Jay-Z's "Renagade" track from ''The Blueprint''. Nas mentions this on "Ether"' ("Eminem murdered you on your own shit")
*** To the point where in rap circles "being renegaded" became synonymous with being massively upstaged by a featured rapper.
** Eminem on Lil' Wayne's "Drop the World". It's the only redeeming part of ''Rebirth''.
** Music/NickiMinaj's verse in Kanye's Monster.
** [[http://www.hiphopdx.com/index/editorials/id.1374/title.murdered-on-your-own-shit This]] article explores the phenomenon in more detail.
* A rarer-example of the above example is when a high-profile rapper appears as a featured artist on a pop or R'n'B (or occasionally more left-field) song.
** Music/KanyeWest on Estelle's "American Boy"
** Eminem on Akon's "Smack That"
** Music/JayZ on Music/{{Rihanna}}'s "Umbrella" - has the first verse (lasting less than a minute) and disappears for the rest of the song (and album, since "Umbrella" opened up ''Good Girl Gone Bad'')
* Whenever [[Music/{{Outkast}} Andre 3000]] turns up on a track, you know he's gonna leave the rest of the song (and arguably album) in his wake.
** RickRoss' "Sixteen"
** Kelis' "Millionaire"
* Music/MariahCarey doing back up vocals for Babyface on a track called "Every time I Close My Eyes"
* Jamie Foxx's video for "Blame It" has scores of celeb appearances. Ashley Scott from ''Series/{{Jericho}}'', Ron Howard, Creator/ForestWhitaker, Jake Gyllenhaal, Creator/SamuelLJackson, Quincy Jones, Cedric the Entertainer, Morris Chestnut, Clifton Powell, Alex Thomas, [=DeRay=] Davis, Joe (R&B singer), Mos Def, Tatyana Ali, Jalen Rose, Bill Bellamy, Electrik Red, Dawn Richard, Keshia Knight Pulliam and [=LeToya=].
* Eddie Music/VanHalen providing the guitar solo for Music/MichaelJackson's "Beat It".
** Also [[Music/GunsNRoses Slash]] on "Give In to Me" and [[Music/BillyIdol Steve Stevens]] on "Dirty Diana."
* Creator/VincentPrice for the [[SpokenWordInMusic closing speech]], and the [[EvilLaugh laugh]], in "Music/{{Thriller}}".
** Not to mention his [[SpokenWordInMusic opening speech]] in Music/AliceCooper's "Black Widow" a decade earlier.
* {{Avantasia}}: [[{{Kamelot}} Roy Khan]] on "Twisted Mind" from ''The Scarecrow'', [[Music/{{Scorpions}} Klaus Meine]] on "Dying for an Angel" from ''The Wicked Symphony''.
* Clare Torry's wordless wails on Music/PinkFloyd's "The Great Gig in the Sky," on ''The Dark Side of the Moon.'' On an album that is completely full of awesome, she is possibly the most awesomest part of it.
* Music/EricClapton's guitar solo on Music/TheBeatles' "While My Guitar Gently Weeps", and in turn, GeorgeHarrison's rhythm guitar playing on {{Cream}}'s "Badge".
* In turn, Music/EltonJohn plays piano, organ and sings backing vocals on "Whatever Gets You Thru The Night" by Music/JohnLennon, and John playing guitar and singing backing vocals on Elton's cover of Music/TheBeatles' "Lucy In The Sky With Diamonds" They made a bet that if both got to number one, they would appear in concert together, which came true in 1974, when Lennon appeared onstage at an Elton show in Madison Square Garden to sing both songs and "I Saw Her Standing There". [[TearJerker It would prove to be Lennon's last public concert performance]].
* Music/BlakeShelton in Cady Groves' "This Little Girl" music video. He plays a towtruck driver who tows Cady's car while she is still inside it.
* Ian Knutson wrote less than 1/4 of "Religion Song (Put Away The Gun)" by EverythingElse.
* Sandy Denny's vocals on Music/LedZeppelin's "The Battle of Evermore", the only guest vocalist on any Zeppelin song. Played live the part was usually sung by John Paul Jones.

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