Well as the times change the majority's music interests change. Back many, many times ago, everyone was into classical, then things like the blues, reggae, classic rock, rap and pop. None of those genres will ever die, it's just that the majority likes something else. For example it's not common to see an old flip phone that you could've seen in the early 2000s, but there still are flip phones. It's not likely to see a tv that needs rabbit ears but they do exist. And they won't die because even if like the entire world forgets, you can always find them in museums, libraries, etc. and because it's music, you can go to a really good music store and buy some CDs, you can try iTunes, And some of the piano studies books come with CDs.