I think many creative people like painters or writers would like to have a tool like MIDI Madness for their profession.
But only musicians and producers get the fun. :-) MIDI Madness is easy to understand and after you've got the hang of it you are able to use it to create basslines, melodies, chords and even drum patterns.
Make 4 Tracks, drums, bass, pad and lead, load an instance of MIDI Madness for each track, tweak, use the random features and in the end you will get, for example, a nice ambient sounding endless song...without recording or setting a single note in the piano-roll. :-).
It's fun.Read Review