Tao is an apparently legendary Atari ST chiptune/demoscene composer (http://rockabit.weebly.com/tao.html) who started in 1991 with the goal of recreating C64 SID sounds on the Atari, and wrote his own tracker synth to get more accurate sounds. This is a 1999 track made in someone else's SID-on-Atari simulator ("Sid Sound Designer"). The point of interest here though is this is just a really rocking track, with a great high-energy mood.