I remember reading about this at the time and wondering where I could get my hands on the source code. What happened to this? After the burst of publicity and some MIDI samples, EMI seemed to disappear without a trace. Was it all just a hoax? Did David Cope abandon the software?
Cope's bibliography [0] suggests he's been following that train of thought up until at least 2012.
Though he seems only indirectly involved (the OM book's preface), OpenMusic [1], seems to contain most of his ideas of how a language should tackle those problems. OM is actively developed, latest release was 2017-04-27, so far as I can see.
Impressive for a computer, the sounds do hint at Bach's chorales.
For a Bach listener, this is a turn-off. A string of nonsensical movements with a sauce of Bachesque colours doesn't make for a composition.