A tempo and pitch shifting algorithm is used, the Elastique Pro V3 by Zplane Development. That helps limit the number of chords but not the chord types.

To give an unrealistic but simple example, if your chord sheet and program settings call for a D minor 7 and the RealTrack doesn't have a D minor 7 then the program plays silence instead of playing a wrong chord. The tempo and pitch shifting algorithm can't change the one note inside a chord needed to change a D minor into a D minor 7.

For another example it can't make a minor chord into a major chord. What it can do is pitch shift the complete D chord down in pitch enough that it sounds like a C chord.


Jim Fogle - 2024 BiaB (1111) RB (5) Ultra+ PAK
DAWs: Cakewalk by BandLab (CbB) - Standalone: Zoom MRS-8
Laptop: i3 Win 10, 8GB ram 500GB HDD
Desktop: i7 Win 11, 12GB ram 256GB SSD, 4 TB HDD
Music at: https://fogle622.wix.com/fogle622-audio-home