If you were into Protracker/demoscene music in mid nineties of past century and would like to visit this golden era of low quality, shortly looped, 8-bit samples then this may be something for you. Over 10000 Protracker compatible tunes collected into a significantly sized package. I mean it is something around 1.8 GB of uncompressed data. The oldest tracks slowly reach age of 30 years old, but there are a recent ones too. You can get it there and listen through couple of weeks straight:
It’s free but copyrights are due to the respective authors.