I obviously realize that sound requires a medium to go through. However, suppose that there was a supernova and it was magically surrounded by an atmosphere that has the same composition and density as earth's atmosphere. Now, if you were far enough away so you didn't get wiped out, then what would it sound like? Would it sound like a regular explosion or something completely novel. Also, how would the sound change if the supernova formed a black hole? Thanks for your time.