I'll guess your friend had the Korg Wavestation, which would sync to midi clock. Additionally, we would independently set off two 1040s and they would stay in sync all night. One of the first cracks for the atari was the "Mike Hunt" 2.1 version of Cubase, a musical program, that is still going strong. I am now using a (paid for) version 13 on PC - which is why i won't convert to linux.