Most infos are given here:
the project - what is it all about?
Fading Twilight is the biggest collection of atari demoscene music. I collect
musics from all Atari systems (VCS/LYNX/XL/ST/FALCON/JAGUAR). This includes gametunes, demo-scores and especially own written tunes. Also musics from non-atari systems are included IF they were done by atari-musicians. The project was officially started in summer 1999. Today, Fading Twilight is the biggest collection of atari-demoscene music ever created.