Baby Driver would be very different without that Jon Spencer Blues Explosion song at the beginning, for instance.
And since Guardians of the Galaxy Vol. 2 was getting released first, if both movies had used the same song, Baby Driver may have been out of luck.
Regardless, at the time, I can kind-of see why Edgar Wright might have been scared when the thought of potentially having the same song in the movie first struck him.
Looking back, the whole concept of the two directors inadvertently trying to figure out what artists would be in each other’s movies without actually giving away each specific song choice is really funny.