I’m currently in the process of writing a song. I’ve got a tune and I’m putting the lyrics together but I’m always concerned that any tune I think of might just be another song I’ve heard somewhere randomly that I don’t remember hearing.
Do I just have a shitty memory or is this a problem that other people have too?
Everything is derivative of something else. Thag made that drumbeat on a rock 20000 years ago and it has passed down in oral history to eventually be in a Nirvana song.
This sometimes results in songs like Dani California that are almost certainly overt or unintentional copies of another song. When you find out your song is subjectively too close to another song you do the right thing, whatever that may be between you and the original musician.