The next logical step, after all the music from the old-skool 8-bit platform of Commodore 64 and the 16-bit platforms of Atari ST and Amiga, is the 32-bit and now 64-bit, PC platform.
This was many years before integrated, standardized soundcards in Microsoft Windows. Back then, Gravis Ultrasound (GUS), Sound Galaxy and SoundBlaster fought for world domination.
The amount of music software was heavily influenced by the demoscene and their need for specialized trackers. This meant that there was quite a selection of trackers, and all with their own unique features.
They both are distant relatives to the original SoundTracker from the Amiga – but they have come a long way since