to add on to what Noel said, you need more than one note to determine the chords. Sure, it can guess, but it will probably be wrong.

If I play just a C, how is BIAB to know whether that's a C chord, a D7 chord, an Am chord, a Bb9, a Gsus4, etc. BIAB doesn't "hear" the melody being played, it only has the notes presented to it. You need to provide it with chorded notes for it to more intelligently figure out the chord progression.

I might would look for another MIDI version of the song that sounds more like accompaniment. Use that to generate the chords; you can always use your original file to get the melody, and then it's just a matter of lining it up if the arrangements are a little different.


John

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