seems the acoustic chords with some melody in the head thought strikes first and the words first draft flop out there...possibly incoherent , the structure isnt much at first before being chopped down to 3 minutes.. is it me, you, them kind of crap.
...adding bass means its at least listenable for me a few times! its the most fun but can take it to the next level.
...then dust off the guitar and that can be either the worst part or bring in some new life to another level of better....often the song dies off there...if the guitar parts are working out ok...this means some more time spent on it.... maybe some riff or something to keep it interesting.
then for me, of course drums are my weakest, and if I forgot to put some DrumDrops track before the first.track..then its a real mess, a true scratch recording which is about 98% of the few songs I might do a year. then filed as "potential song" but low ass effort & skills it goes to the coffin file....the new one is more fun, I dont care to redo half ass songs.
off topic..? the worst of the worst is most often 99% of the time, when I decide to record something Im singing with an acoustic on Track 1 and it always sounds like ass later....its fun, lots of fun making noises and getting the gear turned on....but that first track is always like some bad scratch track idea...with bass and guitars and crappy drums slopped on it. So 99.5% are un-mixable because of the vocal and rythm has the energy but recorded so poorly all interest is lost in doing it all over again...so after a few days of polishing a turd its dropped off to the coffin file.
so I guess Im thinking, in observation, the song starts on acoustic chords but can change once other instruments are added.
like Ginger Baker said Sunshine of your love...was straight & boring until he changed the rythm to something else (and he got no credit as a songwriter but the manager did?)..supposedly the engineer said he came up with the unique drum beat idea too...which is odd because the engineer wasnt the drummer or even in the band...but I wasnt there, who knows. Jack Bruce got paid he wrote the boring version without the drum change.
but songs can take on a whole new direction on later tracking, imo. so I kind of go with it...thats the point.