[whatever music technology they have in 2100--I was about to say CD but I suppose even that's kind of out of date now, what with MP3s and such].
That's the key, if we put everything in monstruous databases, and that there is like 'a little energy ploblem', or that most of those are burned for some reasons, and that you can have only one or two left in the world, or any post apocalyptic scenario you can imagine (there is some choice, and Americans trained us to this so you can easily put up one), then what would be remembered would be maybe some easy to remember with your llittle...'brain machine'...popular traditional songs, in France, hmm, maybe something like:
https://www.youtube.com/watch?v=q0UtYVmC_0kOr:
https://www.youtube.com/watch?v=8t7WSLRDbew