A melody-writing duo published (on the Internet Archive) and released into the public domain 2TB of recorded audio that includes all 8-note melodies. This is something people have mused about for some time, it's nice to see it becoming real.

https://kottke.org/20/02/recording-all-the-melodies

It seems they could save space by leaving out pure keyshifts, and to really make the point a future version should include the sheet music // offer an easy way to index into a melody + play it back at normal speeds.