->''"The Red Flag: nice tune, shame about the words."''

So you've got some lyrics. They're wonderful, they're catchy, but you just can't seem to come up with the right music...

Hey, why not just put it to the tune of an older song? One of TheOldestOnesInTheBook, as many, ''many'' traditional songs and national anthems do this. This can produce a [[LyricalDissonance very dissonant effect]] if the two songs have completely different moods. It's also common in hymnody; most traditional hymnals include the meter signature for each text so it can be easily matched to other tunes; e.g., CommonMeter ( -- used by AmazingFreakingGrace and many others).

See also SuspiciouslySimilarSong. SampledUp is when this version completely eclipses the original. {{Filk Song}}s are very frequently set to the tune of existing songs.

[[ToTheTuneOf/RealLife Real Life]] has its own page.


* [[http://www.youtube.com/watch?v=AnU-2HRJNO4 This TV ad]] for the Atari ports of ''VideoGame/MarioBros'' features a reworked version of ''Series/Car54WhereAreYou'''s theme.
* [[https://youtu.be/e8lDfSR_q_s The jingle for the 90s game "Gator Golf"]] is derived from the Irish jig [[https://youtu.be/CewyTGQR9Pw "The Irish Washerwoman"]]
* An Ashley Madison commercial has guys singing a chorus to the melody of "Couldn't Get It Right" by the Climax Blues Band.

[[folder:Comic Books]]
* MadMagazine ''thrived'' on this trope through TheSeventies, doing any number of musical parodies of popular properties (including ''StarTrek'' and ''StarWars''), whose musical numbers always included footnotes informing the reader of the appropriate tune.

[[folder:Fan Fic]]
* ''Fanfic/CalvinAndHobbesTheSeries''' theme takes ''[[{{Plagiarism}} a lot]]'' of inspiration from the ''WesternAnimation/{{SpongeBob|SquarePants}}'' theme (itself an example of this trope), though the very first part of it is taken from ''WesternAnimation/GarfieldAndFriends''.

* In the 1988 comedy ''Moon over Parador'', the new president changes the national anthem to "Parador, te amo" ("I love you, Parador"), which goes to the tune of "Bésame Mucho". Sammy Davis Jr. sings it. [[/folder]]

[[folder:Live Action TV]]
* ''Series/{{Community}}'' episode "[[Recap/CommunityS1E12ComparativeReligion Comparative Religion]]" ends with the group performing an inclusive, secularized rewrite of "Silent Night". (''Sensible night, appropriate night / Snow on ground, left and right...'')
* "The Lumberjack Song" of ''Series/MontyPythonsFlyingCircus'' and the older ''TheGoonShow'' song "Ying Tong Song" both use very similar arrangements to Eddie Morton's [[http://www.youtube.com/watch?v=QbsXLDNPvNc "I'm a Member of the Midnight Crew"]], which was long out of print when the two shows came along. (You might recognize it from it being referenced in ''{{Webcomic/Homestuck}}''.)
* In ''Series/DoctorWho'', the Third Doctor sings a "Venusian lullaby" to a monster (specifically, the Monster of Peladon) that somehow has the same tune as "God Rest Ye Merry, Gentlemen."
* ''SpittingImage'''s "We've Ruined the World" is an aversion. It's clearly meant to be sung to the tune of "What a Wonderful World", but presumably either the rights weren't available or the holders objected.
* The [[Series/BarneyAndFriends Barney franchise]] is known for adding new lyrics to traditional kids songs, notably the theme song and closing tune "I Love You," sung to Yankee Doodle and This Old Man respectively. Save for some exceptions (mostly the theme and "I Love You"), this is [[AvertedTrope averted]] in more recent Barney episodes and videos.
* ''Series/ElmosWorld'' is another offender, with it's theme tune that's sung to ''Jingle Bells''.
* BillNye also features one at the end of [[OnceAnEpisode every episode]] of the show. And they were surprisingly good.
* The opening theme to NBC's Sunday Night Football was, for several years, done to the tune of "I Hate Myself For Loving You" by Music/JoanJett. The current version, sung by Carrie Underwood, is a SuspiciouslySimilarSong.

[[folder: Radio]]
* The ''Radio/ImSorryIHaventAClue'' round "One Song to the Tune of Another", in which panellists must [[ExactlyWhatItSaysOnTheTin sing one song to the tune of another]].[[note]]If that isn't clear, you could try thinking of a song as being a trope page and the words as being an example. If an example falls under more than one trope you can copy if off the first page (or "one song") and paste it into the second page (or "the tune of another"). [[{{Metaphorgotten}} You need to be careful it really does fit under both tropes though]], otherwise you might be better cut-and-pasting rather than copy-and-pasting. Why use paste at all? Because otherwise you might forget what the example was when you come to type it in. And the last thing anyone wants is to be staring blankly at a keyboard with no idea what they're supposed to do with it. At the piano, we have Colin Sell.[[/note]]

* Just about every [[AustralianRulesFootball Australian Football League]] club theme song is an existing song with rewritten lyrics, as can be seen [[http://www.youtube.com/watch?v=iSANBgZzi6o&feature=related here]]. The only exceptions are Fremantle (which includes a small section from "Song of the Volga Boatmen"), Port Adelaide and West Coast. * The [[http://www.youtube.com/watch?v=gbqQLsPCAhQ Perth Wildcats' anthem]] is to the tune of the "Hallelujah Chorus".

* Entire genres of theatre work under this principle. For instance, "ballad operas" -- the most famous probably being John Gay's ''Theatre/TheBeggarsOpera'' -- took popular tunes and rewrote their lyrics to tell a story. (Note, though, that Weill and Brecht's adaptation of ''The Beggar's Opera'', ''Theatre/TheThreepennyOpera'', had original music, except for the "Morning Anthem", which reused one of the 18th-century tunes.) The genres of "burlesque", "extravaganza" and a few others were the same. Most of these genres are completely or near-completely dead, except for British {{pantomime}}s (a sort of very silly Christmas show, with crossdressing and audience participation), which appear every year in Britain.
* Also, if composers borrowing their own work counts, almost all of Händel's operas, cantatas and oratorios borrowed music from himself or even adapted from other composers, in varying amounts.
* ''Theatre/TheCocoanuts'' has a comic number with the NonAppearingTitle "The Tale of a Shirt" which consists of new lyrics written to the Habañera and Toreador Song from ''Theatre/{{Carmen}}''.

* The song sung by the Easter Bunny in ''Webcomic/SluggyFreelance'' is not-so-subtly modified from the Lumberjack song from ''Series/MontyPythonsFlyingCircus''. Which in turn is based on one of Creator/WolfgangAmadeusMozart's operatic arias.
* In Webcomic/TheOrderOfTheStick [[http://www.giantitp.com/comics/oots0445.html #445]] (warning, spoilers!), Elan sings a song which is told in a note that it's sung to the tune of "O Danny Boy".

[[folder:Western Animation]]
* In-universe example with WesternAnimation/{{Arthur}}: [[ShowWithinAShow Mary Moo-Cow]]'s theme song is sung to ''Frere Jacques''.
** Real-Life example: The Actimates D.W. sang a birthday song to the tune of ''London Bridge'' on your birthday.
* While WesternAnimation/TheBackyardigans usually have original music, the song ''What Do You Do With A Scurvy Pirate?'' is a filk of the shanty classic ''[[https://en.wikipedia.org/wiki/Drunken_Sailor Drunken Sailor]]''.
* ''WesternAnimation/FamilyGuy'' did this several times. The tune for "The FCC Song" is from ''Take Me Along'', an old Broadway musical. The tune for "A Bag of Weed" is "Me Ol' Bamboo" from ''Chitty Chitty Bang Bang.'' Whether a given song from the show counts as this trope or straight-up parody mostly depends on [[WeirdAlEffect how obscure the originals were]].
* One of the cases on ''HarveyBirdmanAttorneyAtLaw'' consisted of him prosecuting for a Japanese band called Shoyu Weenie[[note]]Soy sauce sausages[[/note]], who were accusing the Neptunes (yes, from ''{{Jabberjaw}}'') of stealing their hit.
* ''WesternAnimation/TheSimpsons'' -- "O Whacking Day" is strong LyricalDissonance for Americans and Germans familiar with the yuletide hymn "O Christmas Tree"/"O Tannenbaum", less so for Britons who know the bloodthirsty lyrics of the revolutionary hymn of the same tune, "The Red Flag" (to give you a taste, the first two lines are "The People's flag is deepest red/it shrouded oft our martyred dead").
* The ''WesternAnimation/TotallySpies'' ThemeTune uses the tune of the rather obscure song "Here We Go" by Moonbaby.
* "Blow The Man Down" and the opening theme to ''WesternAnimation/SpongeBobSquarePants''.
* One of the ending tunes of CampCandy is sung to the tune of ''On Top of Ol' Smokey''
* GarfieldAndFriends had Binky The Clown's [[HappyBirthdayToYou birthday song]] sung to "Freres Jacques".
** One episode of ''WesternAnimation/JusticeLeague'' had a commercial jingle playing on the Batmobile's radio that used that tune.