WHAT IS THE MOST UNIQUE SONG THAT YOU HAVE EVER HEARD?

Karlheinz Stockhausen - Stimmung
https://youtu.be/3hPkJW95jsw

Gyorgy Ligeti - Requiem
https://youtu.be/wqrJmxy4q3A

Miles Davis - Agharta
https://youtu.be/cWFu_Pj4Kxw

Brian Eno - Three Variations on the Canon in D Major by Pachelbel 
https://youtu.be/nPesTx4yb3g

John Hartford - Boogie
https://youtu.be/s1NxpR1WL38

Jay Leonhart  Salamander pie

Maggot Brain by Funkadelic

Spirit in The Sky  - Norman Greenbaum

Depends on how you define “unique”…..

If you consider any bottom-feeder releases, you may get “disgustingly evil” offerings and you now get the infamous Arthur Brown with “Fire”. I hated it from the time it first was released.
It is with some trepidation that I even highlight it now.

https://www.youtube.com/watch?v=en1uwIzI3SE

If you consider “weird” to a point where one wonders if - in a perfect world - the artist and performance could be somehow removed from the gene pool , you can get Tiny Tim and “tiptoe Through the Tulips”

https://www.youtube.com/watch?v=zcSlcNfThUA

Yup …. They do walk among us …..

At the other end of the audio spectrum, if you consider “unique” in the context of “virtuosos” you get Les Paul and Chet Atkins as “Chester and Lester”
https://www.youtube.com/watch?v=MApWl20oCh0

Bikini girls with machine guns-  The Cramps

https://www.youtube.com/watch?v=8fyr0zbaFyE

"Sweet Dreams are made of these".
Marilyn Manson.

ozzy

"Cantata de puentes amarillos" written by an Argentinian band, that a friend told me about, called Almendra.
https://www.youtube.com/watch?v=KTksi_VXGCk

Scraping Foetus Off the Wheel: "Enter the Exterminator".
The out-of-nowhere heavy metal riff off the Peer Gynt Suite by Edvard Grieg is a trip. One of the best from-high-to-low art syntheses you will ever hear.
From the album "Nail". AllMusic called it "possibly the best Foetus album [...] the sheer range of this music is hard to believe.
https://www.youtube.com/watch?v=B7_wJYvMB60

Scraping Foetus Off the Wheel: "Clothes Hoist"
From "Hole"
https://www.youtube.com/watch?v=nvAKJgsWVM4

For a unique song that sounds like no other,
How Soon Is Now- The Smiths.

Captain Beefheart Magic Band-Electricity

Tiny Montgomery
by Bob Dylan and The Band (Basement Tapes)

WDR 3 radio in Köln would play works created by various tape loops, that were super imposed and interwoven with original compositions. I loved these pieces and am unsure whether or not they were all constructed by the same person/s. It's unlikely but if anyone else knows about these works, I'd greatly appreciate some info.
 
The most original performance experience I ever had was seeing Moritz Eggert play a film score ( piano, cap gun, etc...) while showing a German Noir Silent film.

There's also a piece where Beethoven's Moonlight Sonata was sent in the form of sound waves to the moon, it reflected off the moon and then was recorded and played back once it arrived here back on Earth.

I'd recommend hearing the Charles Dodge piece 'Any Resemblance is Purely Coincidental'

I'd recommend seeing Eighth Blackbird.

try this :) https://www.youtube.com/watch?v=7_KQ8zUhcww

peterr991, Thanks for the link. It’s referred to as Schlager.