Hi,
This is strange and weird.
I take my cue from folks like Peter Hammill and Roy Harper, people that write forever and their material is always different, and makes you wonder where it all comes from. Lately, for my tastes, Peter is not as good with VdGG.
If you're gonna sing the song, for example, it should be more important to detail the voice and its inflections and abilities. You can do it with a piano, and a guitar ... easily. In general, from my stupid way of thinking, using a drum track or bass track first, is weird, specially if you are going to treat them as background anyway ... you lose the ability to ACCENT the voice, or the guitar, and have to make changes later, and you will be ADJUSTING to the drum beat, instead of the strength of the song, ie. its message and voicing ability!
That would be weird.
Thus, similar to what/how I write, no two situations would ever be the same, or you have no idea what you want your piece of music to say and DO.
It would seem to me, rather strange, and I am a person that appreciated and appreciate the empty head, all experiment stuff that had no meaning, but what we don't see is that stuff like that TEACHES you how to work with "meaning", instead of you having to scratch and claw to create something that is not totally a part of the piece, and has a tendency to split it up.
This is the case in the CHB, where the tendencies go in 15 different ways, WHICH, is one of its most attractive parts as to how it all came together! Tremendous work making it so, but also a bit harder in the end, and then you endup trying to accent details that were already done and changing them could be more difficult!
You write, for what you "see", not JUST for a drum beat, or a bass guitar -- although they can be a part of it. If you are trying to add lyrics, now, to a song you already have with a solo, the chance of it matching is not as good as coming directly from the lyrics. There is one EXCLUSION to this ... Bob Dylan, since you all know that everyone else can do his music better, but the music itself has never been important to him, as the lyrics are! We need to see that! He's not interested in Manfred Mann's solos, or Jimi's solo splash! But it tells you what you can do when you work on the lyrics that DRIVE forward.