Haven - Marianas Trench, 8:50

Sing About Me, I'm Dying Of Thirst - 12:06

jesus christ

Mahabharata by Vyasa, about 2 weeks

theres no way

Tbh I'm not sure if Mahabharata is a song or just a regular poem, but it's about 100000 verses long and you would need two weeks if you read it non-stop
However bc of it's age of about 2500 years it's not on any streaming service
But the longest song I know that is on a streaming service is The Great Barrier Reefer by Bongripper (1:19:23)

how is that even possible

Length

read my comment hehe

i also know of a song that’s currently being performed in a cathedral in halberstadt literally called “as slow as possible” which plays a note like once every two years

also called organ squared, a typical performance of the song on piano takes 20-70 minutes

https://en.m.wikipedia.org/wiki/As_Slow_as_Possible

Stained, Brutal Calamity - 12:17

Only Great Deals (Full version)

9 whole minutes, nice

Some remix of a song by the chemical brothers, like 20 min

free bird extended version - i forogor but i think it 12 - 14 mins