Hi Matt,

Your thoughts were my thoughts too so I went back through all the pdf manuals that I've collected since my first version in 2006 and X4 is given under "Tricky Chords" in the chord list in every manual, 2006 - 2013. This is what made me wonder if it was a quartal chord because these chord types have been asked for a number of times since 2006.

Since my above post, I've tried half a dozen midi styles in different genres and at different tempos and the result has consistently been C4 = C-F-Bb.

That doesn't mean that X4 chords will work with Realtracks, though. From what I understand, RTs require the chord to have been played in the original audio recording of the track and so if C4 wasn't played as C-F-Bb then it won't appear in a (re)generation and Csus4 might be the substitute.

My hearing isn't astute enough to identify the notes of chords in Realtracks. The best I can do is major, minor, maj7, 7, sus4, diminished, augmented and maybe 6 on a lucky day. Anything fancier than those requires me to have the notation to interpret.

Regards,
Noel

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