*A hardware [[MIDI|Midi Port]]: this spawned a generation of Musician Geeks. And some Atari ST games did use Midi sound as an option. [https://forums.atariage.com/topic/301647-midi-games/ Source]
The Atari ST is a paradox as it is inferior to the [[Amiga]] yet still considered better by many (the war still rages on nowadays). It was easier to do work on Atari, while on Amiga a guru meditation (machine crash) was never far away. Also the TOS was in ROM which means it could be used immediately and it didn't consume valuable RAM nor monopolize the floppy drive nor require an hard drive. And as the OS was immutable, less time was spent customizing it, freeing up more time to do productive work. The hardware was also simpler to develop for compared to the baroque Amiga architecture.
The Atari ST was used widely in CPC software development (Cross Development) as it had many advantages :