I think Peter Gannon's "preview" is his way of saying "plays the chord", so I think he does mean what I also think you mean.

I guess you know that you can play from the selected bar by pressing the "space" bar. That will play the music in context, rather than just the chord, so it is different from what you ask, but it will play all the chords.

Jazz relative beginner, starting at a much older age than was helpful.
AVL:MXE Linux; Windows 11
BIAB2025 Audiophile, a bunch of other software.
Kawai MP6, Ui24R, Focusrite Saffire Pro40 and Scarletts
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