Lou Reed- Perfect Day (1972)
It's such a perfect day, I'm glad I spend it with you / Such a perfect day - you just keep me hanging on / You just keep me hanging on
At first listen, the song appears to be a simple story about cherishing time spent with a love one but it took on a darker tone when critics interpreted it as Reed singing about his battle with drug addiction.
Ending with the refrain You're going to reap / Just what you sow makes it harder to justifiably explain away as a simple love song.
The drug claims undoubtedly inspired Danny Boyle's 1996 film Trainspotting, where it was used during a scene in which the lead character Renton, played by Ewan McGregor, overdoses on heroin.
One of Reed's most straightforward songs, compositionally, it was covered by a number of artists and released as a single in 1997 for the BBC's Children in Need appeal.
Copy and pasted from https://www.bbc.com/news/entertainment-arts-24704260