"writing" lyrics

"So what I do first is work on the track till its identity is fairly well established, I already know how its gonna sound in terms of textures and time and speed and all that, then I take all that home, a rough mix version of it and I just keep playing it very loud and just singing along with them just singing anything really, and sometimes that anything is just right for it. It s the only thing I do, I guess, that approaches improvising, because everything else is very pedestrian in the way it's made. What often happens is that I get an idea of how the words will fall and what their function be rhythmically, so I start singing or placing the syllables in a certain way, and they're just nonsense at the beginning. Then certain types of sounds will emerge, like a particular vowel sound will suit a particular song. Like, for some reason, the vowel sound 'i' suited 'Baby's on Fire,' it's a sharp kind of thin sound; so then I'm working around two things, which is this vowel sound and this syllable construction, and quite soon words arise from that, and you only need to get about six words out of that for you then to have a good clue of what the song is going to be about. And I know it sounds extremely perverse whenever I explain it, to finally at the end of it all sit down and read it and say, 'Ah, so that's what it's about.' But what strikes me is that following this process, the preoccupations that manifest are not ones that you're necessarily conscious of at any earlier point."

http://music.hyperreal.org/artists/brian_eno/interviews/musn79.html#musician