The band is real, but the singer is a more or less fictional character. Same may go for the rest of the band.
There are two categories of examples: "Real Life Music" for bands that exist in real life, and "other media" for bands that are a Show Within The Show.
Just like with wrestlers, a Kayfabe singer's real identity may be an open secret. That is, not secret at all but not polite to talk about in context. The fans are likely to be outraged if the singer goes out of character during an interview.
Compare "Kayfabe" from Professional Wrestling. One subtrope is Robot or Spaceman Alter Ego. Contrast Anonymous Band, where the musicians simply hide their identities, and Fake Band, where the band itself is fictional.
Examples, Real Life Music
- In Blutengel the singers are vampires.
- In Versailles, the band members were vampiric immortal aristocrats from the Romantic era. A "Funny Aneurysm" Moment (and the ultimate breaking of the kayfabe) ensued when Jasmine You died in Real Life.
- The band Rolandz has developed a quite solid discography and even been on tour. Its singer, Roland, is a character from a comedy movie. The real singer is the same actor who played Roland in that movie.
- ManoWar consists of really manly men, fantasy heroes who are always ready to kill anyone. With STEEL, of course.
- Lordi are monsters... who have sued to bury images of them out of costume.
- Dir en grey's vocalist, Kyo, presents a facade of being the personification of Insane Equals Violent onstage, even self-injuring for real on a level equivalent to Mayhem's Dead. In Real Life, however, he is reported to be shy, intelligent, and most definitely not suffering from extreme mental illness or violent.
- Markoolio play this on two levels. His first persona is this cool playboy, gangster, warrior, expert soccer strategist, and so on. However, this facade breaks all the time, especially since his own chorus are disloyal to him and frequently rat him out to the audience - exposing him as the total failure and Small Name, Big Ego that he really is. Of course, this "real person, under the mask" is just as fabricated as the first level.
- At the live Vocaloid concerts, the band is real enough, but the lead "singer" is a projected image (and not really a singer at all).
- The White Stripes' Jack and Meg maintained that they were brother and sister long after it was public knowledge that they were actually Amicable Exes. Jack said it originally started so that people wouldn't constantly focus on their relationship over the music, and presumably they just maintained it as part of the band's identity.
- Daft Punk's persona is of a couple of robots. They say that the reason why they do this is because takes focus off of them as artists, and puts more focus on the music, so their live performances are more like raves where the DJ isn't all that important.
- Lady Gaga went to her little sister's graduation in full Gaga regalia. She later said that she considers her entire life to be part of her 'character'.
- Members of the German band Coppelius usually play their XIX-century aristocratic personas in public.
- Kraftwerk are robots, who became less human as time progressed. They even give interviews as their mechanical robot selves.
- GWAR has a long backstory about them being aliens banished to Earth, and like Lordi are never seen out of costume.
- Devo has gone through a few permutations of this; it's essentially them, except with sci-fi bases, an idiot manager that doesn't understand them, a giant baby (Booji), and their...uh...leader, General Boy. They always did claim to be a corporation, which got a lot funnier in the mid-90's when they reformed as a soundtrack company. And then there's bass player Jerry Casale's side-album as Jihad Jerry, essentially Stephen Colbert as a Muslim blues musician.
- The Residents are never seen in public without their trademark eyeball masks. There's a general assumption that the four "managers" that appear with them and speak on their behalf are at least partially composed of the actual members of the band.
- Gorillaz are a Band Toon in the real world, which means that their members are a group of four cartoon characters.
- Buckethead is the persona of Brian Patrick Carroll, who is so socially awkward that he invented the character to hide his face and distance himself from his audience. People who know him, however, say that his behavior "in character" is basically just him being himself.
- Industrial Metal artist Mortiis, for a long time, was never seen without his troll mask on, with its pointed nose and big ears. In 2005 for his album The Grudge his mask took on a more artificial appearance, looking like it had been stitched and stapled to his face. After that, however, he finally removed the mask. And then brought it back a few years later due to popular demand.
- Singer Emilie Autumn seems to always be in character as Emily-with-a-Y from her book to some extent.
- Stovokor is a death metal band consisting entirely of Klingons.
- Faxed Head supposedly met as teenagers in Coalinga, California, had a Bungled Suicide pact that left them deformed in various bizarre ways, then decided to form a death metal band together. Thus they'd typically perform wearing strange masks and costumes. In reality, their lineup included Mr. Bungle guitarist Trey Spruance and Gregg Turkington. They would also sometimes open for themselves as their supposed "rival" group The Bon Larvis Band, removing the masks, dressing more like a typical bar band, and playing an Overly Long Gag-laden parody of blues-rock.
- The Space Balloons claim to be lost travelers from the planet Balloonia. The concept is mainly adhered to in performances and the songs themselves, though, not interviews.
- In a 2012 interview with Oprah Winfrey, 50 Cent says that his onstage "thug" persona is this. His real self, Curtis Jackson, is a family man.
- Deathgrind band Brujeria is ostensibly made up of Mexican drug lords who always perform in masks to hide their identities from the FBI. However, most of their members past and present are already well-known from other acts.
- The electro-industrial project Zombie Girl has singer Renee Cooper as the eponymous zombie, always appearing in corpse make-up and claiming to be undead in her lyrics.
- Horrorcore rapper/singer The Jokerr raps from the perspective of a medieval court jester imprisoned in a dungeon for twenty years with a red costume patterned after a joker playing card to match, he has recorded a large amount of songs unrelated to his persona though.
- The Aquabats! are a ska band made up of super heroes. Their mythos is expanded upon in their TV show.
- The County Medical Examiners are two Carcass-loving physicians joined by a much older, avant-garde physician who play Death Metal based on what they see in their field. After years of mystery, it was implied in 2012 that the whole band was simply a side-project of musician Matt Widener (ex-Exhumed/Cretin).
- Har Mar Superstar is Harold Martin Tillmann, the frequently sex-obsessed soul-singer twin brother of indie pop singer-songwriter Sean Tillmann (aka Sean Na Na). Of course, Har Mar is Sean Tillmann, the stage name really stems from a shopping center in Minnesota called the Har Mar Mall, and he really only kept up the twin charade for a short period of his career. Tillmann continues to put out solo albums as both Sean Na Na and Har Mar Superstar, and he still takes on a somewhat more flamboyant persona when performing as the latter.
- Masked Intruder are four ski-mask-clad criminals who formed a pop-punk band while in jail together, only differentiated from each other by the color of their masks. Lead vocalist Intruder Blue apparently got in trouble with the law due to his Stalker with a Crush tendencies, so a lot of their material consists of obsession songs being played for humor.
- Ziggy Stardust and the Spiders From Mars, David Bowie and his backing band's alien personas during the 1972 tour for the Ziggy Stardust album.
- Abney Park is a group of Steam Punk Sky Pirates.
- Unknown Hinson is just the onstage persona of Stuart D. Baker, but is presented as if he's a real individual.
- The members Steam Powered Giraffe perform as a group of automatons built in the Victorian era, complete with elaborate metallic stage makeup. Even their merch sellers have their own personas in the form of "Blue Matter Engineers," which they dress up as for shows.
- The Japanese metal band Seikima II performs as a group of Akuma (demons) from the futuristic hyper-evolved dimension Makai that preach a demonic religion and aim to take over the world through their music. They were destined to disband at the end of the century (seikimatsu, another way to say the band's name, means "century's end", as any Fist of the North Star fan knows), but they've reunited several times since, once in response to the Touhoku earthquake and tsunami disaster.
- Alice Cooper was originally the name of the band as a whole, but frontman Vincent Damon Furnier eventually turned it into a fictional, psychopathic character. Behind the scenes, Furnier is, at least in modern times, mild, straight-laced and conservative.
- Servotron performed as a band of robots, whose music was meant to promote robotic uprisings against humans, as well as to encourage humans to become cyborgs.
- The thrash metal band Ghoul perform as a group of mutant, cannibalistic ghouls from an over-the-top Überwald land called Creepsylvania. They keep their identities a secret and always wear bags on their heads when performing live.
- Japanese rock band Kishidan, who model themselves after the 80s-era "yankee" punk look complete with pompadours, is fronted by vocalist Show Ayanocozey. Meanwhile, a similar looking man in a blonde afro is the flamboyant J-pop rapper DJ OZMA, who later "retired" to produce the Japanese-American trio Yazima Beauty Salon, one of whom is the "16-year-old" Naomi Yazima. The open secret that all three are the same person was a big joke when all three were technically recording music. During a television program, Naomi asked for another musician's autograph and to have it made out to "Naomi Show Ozma". The Show Ayanocozey and DJ OZMA personas were even made to have a faux-rivalry between them, and they had a shared concert where they even performed on stage together (with DJ OZMA played by a member of the OZMA entourage who was to "inherit" the band in another publicity stunt), and at a later time DJ OZMA performed with the other two members of Yazima Beauty Salon as OZMA rather than Naomi. He kept the ruse up until he appeared on a talk show in 2013 and admitted (as Show) that he and OZMA were "the same character".
- The Youtube channel SiIvaGunner has this to a certain extent. The 'high quality rips' are all submitted under the same person, even though in reality a large amount of people are working behind the scene to make them. In the same sense, the character SiIvaGunner is also this, with all commentary in videos (provided by a Text to Speech program) being done in-character, including when the channel gets a Hostile Show Take Over in the form of The Voice Inside Your Head, Wood Man, Inspector Gadget and President Hartmann (the channel and accompanying Twitter account switched in appearance and character during the takeover). Averted when going to the Bandcamp page however, where all rips are credited to the correct artist.
- Tom Green's album Not The Green Tom Show was recorded under an alter-ego, the ill-tempered rapper MC Face. Tom Green himself is supposedly just MC Face's producer, and it's a running gag throughout the album that MC Face will include lyrical jabs towards Tom Green and his friends in songs, insult him in between-song skits, or antagonize him in staged Studio Chatter. By the end of the album, Tom Green finally has enough and walks out, leaving MC Face to do the last song completely acapella.
- The Death Metal band Portal (no relation to the video game) have never performed in public without their costumes, and three of the band members' real names aren't even known to the public (two of them are known to be Brad Loong and Kevin Kevinson from Impetuous Ritual and Grave Upheaval though).
Examples, other media:
- In Pondus, Pondus believes that a certain rock band truly lives the creed of "Drugs, Sex & Rock'n'Roll". In one strip, the band is shown working out and eating healthy food. Suddenly their manager come in and yell at them that the journalists will be there any minute. And thus, they quickly trash themselves down to look as if they have been partying and boozing up all night. Then the scene switches to Pondus and his wife watching the television. A journalist is (or probably rather is pretending to be) surprised that the band members manage to stay healthy with this lifestyle. The singer explains this with "It's rock'n'roll", baby. It becomes a lifestyle." and Pondus tries to get his wife to accept this message as gospel.
- Discussed in CalvinAndHobbes. Calvin's mom explains the kayfabe by stating that heavy metal death bands are just creating characters to sell records.
"Calvin, the fact that these bands haven't killed themselves in ritual self-sacrifice shows that they're just in it for the money like everyone else."
- In Tropic Thunder, Alpa Chino is a rapper who is overly heterosexual in his music and videos, but is secretly gay.
- Law & Order: SVU used this twice. Two big scary musicians, suspected of horrible crimes.
- One is a black "gangster" rapper suspected of the rape/murder of a white woman. However, he he is actually quite naive and has no experience in real crime, his gangster persona being nothing more than a keyfabe persona. The woman was one of his friends, and he ends up getting killed by a real gangster (who just happens to be white) as he's trying to help the detectives catch the real villain.
- The other is a "vampire" who is afraid of getting HIV from real blood.
- Lead-singer Jem from Jem and the Holograms is a holographic projection protecting the identity of Jerrica, the company owner.
- In Arthur, the band Binky is made of up Hologram musicians and synthesized sounds. Apparently an open secret, as the episode on the band has them materialize from nowhere during a live performance.