I edited the post above with more info but found an old post I made, doing it manually might not be as quick as generating but you get exactly what you want, in PT you can also Acidize the bars/chords as loops and use it that way:

1. download the the usertrack.

2. unzip it and rename the SGU to MGU

3. open the mgu file this will load in the wav also

4. set bar offset to -2 and in edit menu insert 2 bars at -1

5. now move the audio track right back to bar -1 just hold ctrl key down then click on audio track and drag.

6. you can just turn on snap to bar, now choose a beats, bar or bars by highlighting them, now click on the track number and drag it out to the usertrack folder and just put the chord name with number of beats or bars on the end.

7. now you can make a new project with your chords and just drag the chords files into the track with Snap to bar enabled. To change the tempo or pitch just hold ctrl key and click on the chord file and it will turn blue now right click and select Time stretch & pitch shift, now just drag it to the correct location. If you have a chord with just 2 beats drag it into the bar then drag the next chord to the start of the next bar now move it left to fit, otherwise it will erase that 2 beat chord.
The chord files are easy moved by holding ctrl key first then click so they turn blue and drag while still holding ctrl key. You can easily copy them as well.

8. you can also work within power tracks by changing the track to the tempo you need firstly then you can enter the chords to your own arrangement in the markers window by putting the cursor at the bar or beat then click Markers then Ins and type the chord in. This way you have your chord track on the bar numbers at the top of the tracks window that you can now follow. So just highlight the chord you need from the usertrack and paste it to bar 1 in a new track then do the same for next chord. As mention before you can highlight and pitch shift the chords.

9. (from above) when you have made your chord progression track you can generate a metronome midi track, if you drag the new audio track and mid metronome track out it will give you the chords in the midi file as markers,
so when you open the midi file then the wav in Powertracks it will give you the chords on the timeline as markers and also in other DAW's.

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