RE: Whether it rests on key modulation - or, #keymodulation as a #SongWriting device, #popsong device, neck-massaging device. I haven't picked up the #guitar yet to figure it out, but i think i'm wrong: at least the timeline referenced. It's not modulation, but (Having not picked up the instrument) I believe it is "borrowed chords", as in borrowing chords from another key which is not necessarily analogous to modulation, and certainly-- potentially-- much more complicated!
Clearly
not-knowing
now bugs-me.
That's definitely a #piano #songwriter's song. Songwriter is a pianist. Elton John tunes are like that. In my #perceptual experience, in retrospect, I recall feeling that way about Kurt Cobain, the chord changes in nirvana songs (McCartney & Lennon, etc.).
That is to say, it's about the #melody you "hear" and the way it "sits in the chord" so to speak (the chord, which you also "hear" probably).
You can change those chords n shit.
People call that Jazz. Is that correct? That's i dunno.
Led Zeppelin?
Otherwise, it's Er!c Cl@p⸸on's bastardization of "the blues"; a "I , IV , V" (or make-it-fancy w/ a vi and a iii) an A-B-A-B-C #progression, or the other one.
Stray from the first inversion for a less "familiar" way of penetrating the ear hole. Like, "the stranger". Sitting on hands