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?
You can’t, so you must assume that whatever you create has already been created and if people notice it’s a sign you did well to emulate the source material.