Here's a basic recording template
A-Test-Record-play-anywhere&verse-chorus_regions_markers.zip
it's in A but you can select all the chords with time selection and click "Transpose Chord Selection" to change it to the next key to record to.
I made one a verse and chorus you record record in the style for verse and chorus the other is red play anywhere so it will fit the same style you recorded over all different song section colors,
it has an ending for verse and chorus.
You can change it to any progression you like, just try and cover the basic chords.
These are only basic for you to try, you can create more advanced ones with fills so whatever you play in the fill will be matched, you can also link sections with -L1 -L2 -L3 etc. this will match these section to the user's progression. You can create more variety of endings, you can play some pickup/intro notes in the count-in(s).
You can create a backing to record to by selecting some drums and bass from the
https://www.reatrak.com/downloads/test_files/
If you create up a backing track to record to and you are using the red play anywhere template
just change it to the verse color first so it fits the backing track instruments, then when you save the play anywhere region chord csv for the wav change all the regions to red pay anywhere color except pink count-in and verse and chorus endings, this is done by clicking the color song section or "Play Anywhere" button, it will then move to the next region so it's quick to do.
If you record DI Direct Input you will get better results without the sustain bleeding into the next bar, FX can be added after it has been fitted to the user's chord progression.
Save the regions.csv in the region manager or "Export\Renumber Chords" button (this will also snap chords to the grid in case they are out) and rename to same name as the recorded wav.
Put your instrument tracks in a folder with name format eg.
X:\ReaTrak Instruments\
Guitar, Electric, Rhythm Classic Rock 01 Ev8 4-4 120bpm
Guitar, Electric, Rhythm Classic Rock 01 Ev8 4-4 120bpm C-Am.csv
Guitar, Electric, Rhythm Classic Rock 01 Ev8 4-4 120bpm C-Am.wav
You need this in the name format:
4-4 is time signature
120bpm is tempo
C-Am is Key
To try them out
enter your chord progression and color the regions for the song part,
select all regions with the time selection,
click Choose Instrument button and choose the wav you recorded,
click ReaTrak Selection,
it should fit the instrument to your chords.
If it's all good you can upload and share/collab.
Download ReaTrakConfigZip
https://forum.cockos.com/showthread.php?t=212645