That's interesting, Freawaru.
I often have my regular thoughts going on "simultaneously" with the music.
In many ways the mental music works really well as a meditation object, maybe because it's so reliable like the breath (in those of us who have the problem really bad anyway).
side note: Oh no, I notice from my previous post that I put the apostrophe in "it's" when I meant the possessive "its". I knew that would start happening one of these days, now that it seems to have become the standard.