Coined by Harvard psychologist Dan Gilbert, the term kleptomnesia means “borrowing someone else’s idea without realizing you’ve done so.”
This happens a lot in the world of music, when you hear a song that sounds a lot like some other one released before it. Sam Smith, a “victim” of kleptomnesia has stated:
“It wasn’t a deliberate thing, musicians are just inspired by other artists.”
This was after he was sued because his song “Stay with me” sounded pretty close to Tom Petty’s “I won’t back down”.