Originally Posted By: MarioD
Originally Posted By: Mark Hayes
It is possible to generate fun puzzles, at least that are puzzling to me.
Here I have a piece that begins with D#, continues to F#, then ends on F.
I called it key of Em, BIAB wants to call it key of Bb.
Why???
I'm guessing it's calling D#/Eb = IV and F = V and ignoring the F#?


The message says "it is likely Eb". It does not say that it is Eb. It is only a suggestion.


I see it as a guess about an underlying musical reality rather than a suggestion about what you might want to do.

Either way, I'm wondering why, and how to evaluate it.