Mostly a Comedy Trope. Music is known for having certain traditions, especially what qualifies as a musical instrument, so sometimes it's fun to make music or play popular tunes using sounds that aren't really considered musical at all. Burps and farts are used often, as are animal noises.
In other words, sounds which aren't musical make a musical line.
Music made from burps/farts
From Animal Noises
From grunts, screams, ect.
From objects besides instruments
- Nelson Muntz did another version in a talent contest on The Simpsons: he had a row of nerds, he wedgied them to create the notes.
- In The Adventures of Baron Munchausen, the sultan had an organ where the notes played were screams of tortured people on the other side getting poked with spikes.
- On a similar vein, History of the World Part I had the Hallelujah chorus being sung by cavemen who had their feet and stomachs hit by rocks.
- The second and last Bozo on WGN-TV - did a bit called "Doctor Flamo" on The Gong Show of the pig organ/mouse organ/Muppaphone variety: Joey D'Auria held his hand over candles of vaious heights, his own screams of pain were the melody of the tune in question.
Music made from anything else
- A couple of handbell choir-type musical acts on The Late Show — one had glass soft drink bottles which they stuck their fingers in and popped out for the sound.
- Leroy Anderson's The Typewriter, in which the percussion section is a typewriter (including the carriage bell which rings at the end of each bar).
- Frank Zappa made a very early appearance on the Steve Allen Show, playing a bicycle
- The Trope Namer That Mitchell and Webb Look sketch featuring the show Anything Can Be Music; which makes a song out of "a hamster begging not to killed with a knife", "a boy at a public school about to be hit with a cane", "a horse being kicked in the crotch", "a middle class family separated whilst caving", and a prisoner saying the actual words "Anything Can Be Music"
- The Muppet Show had an act called Martin Suggs and his Muppaphones. The Muppaphones were little fuzzy round things with faces, and they sang different notes when he clonked them with a mallet.
- The Blue Danube Waltz by Johann Strauss is very popular for this. (Think spaceships from 2001: A Space Odyssey.)
- Penn & Teller's Smoke & Mirrors (never released) had a level which aurally imitated the aforementioned The Typewriter except as an arcade shooter instead of a typewriter.
- Dungeons & Dragons module X2 Castle Amber. The Amber family turned 88 people with singing ability into stone statues. When each key on a keyboard is pressed, the corresponding statue will sing one note, allowing the user to play music.
- In Will Vinton's Claymation Christmas, The Carol of the Bells is performed by a choir of (wait for it) anthropomorphic bells hitting themselves with hammers.
- Played straight in the Real Life avant garde musical genre of Musique concrète (concrete music) that appeared in the 1940's. Its goal was to make music out of any found or recorded sound, in addition to instruments and human voices.
- The Reading Rainbow song "Sounds Like Music To Me" was about the concept of making music out of anything.