On reflection, there's this: the first post of this thread seems to compare playing an instrument to making electronic music with software, but I don't think that's a meaningful comparison. Making music with a sequencer or programming language or whatever is more akin to composing a piece of music for an orchestra than playing one of the orchestra's instruments; whether you're composing classical music or sequencing electronic music, in both cases what you're really doing is writing an algorithm using a music-centric language (which may be stave notation, or a sequencer's GUI, or a visual programming language like Max) which will eventually be executed by something (which may be an orchestra, or a bunch of synths with MIDI connections, or a computer) that outputs music.