<< I'll have a look at the MIDI Supertracks with regard to "Organ".>>

In the manner you've explained how you plan to use the files with other VSTi's, SuperTracks appears to be the best option. They are created similar to how RealTracks are, so the midi data will also be similar to if you were converting RealCharts from a RealTrack. I think the SuperTrack instrument data may include more midi data controls than RealChart because RealCharts are for notational purposes and SuperTracks are real artist performances. I'm not sure about that but it doesn't matter because SuperTracks data will at least be equal to RealCharts and you have had success with RealChart data in the past.

I have Melodyne Essentials too, and I'm not sure it will translate your organ audio sufficiently to midi because Melodyne Essentials is not polyphonic.
EDIT:(We were posting at the same time but that information you found is correct)

Using BIAB SuperTracks or Midi instruments to generate midi data will alleviate the Melodyne Essentials not being polyphonic issue.

As a side note, BIAB can import individual tracks from an existing midi file to be used in a song project. Entire midi file songs can also be imported. It's not been mentioned, but every RealTrack, whether is has RealCharts or not, can use the Playable RealTrack feature. This presents users with the opportunity to import a single midi track containing a specific riff into a BIAB project, assigning a RealTrack to the track in the Mixer and having a BIAB RealTrack instrument's audio play that specific riff. Not every track will always play perfectly but it's surprising to me how often satisfactory results are obtained.

There's a process to follow but it's no more difficult than using Melodyne and it's all done within the BIAB program.

I've attached a screen shot of RealTrack 688, playing Playable RealTrack Data to demonstrate a RealTrack without RealCharts using the feature.

Attached Files (Click to download or enlarge) (Only available when you are logged in)
Playable RT 688 B3 Organ.jpg (270.24 KB, 85 downloads)
Last edited by Charlie Fogle; 12/01/24 08:18 AM. Reason: Update added
BIAB 2025:RB 2025, Latest builds: Dell Optiplex 7040 Desktop; Windows-10-64 bit, Intel Core i7-6700 3.4GHz CPU and 16 GB Ram Memory.