Allow guitar string mapping with separate midi channels - make guitar tab accurate by specifying which string is played.

Your idea

Midi files recorded via a midi guitar (e.g. yamaha ez-ag) or from guitar pro (?) assign notes to a particular channel based on which string is played. e.g. an 'A' played on the low E string is played on fret 5, whereas the same note played on the A string is played on fret 0 (open). The E string 'A' is recorded on midi channel 6, where as the A string 'A' is recorded on channel 5, to differentiate the strings. This means that all the information for correct finger accurate tablature is contained within the midi file.

Musescore currently has no way of using this information. Either the channels are imported separately and must be manually recombined, or all the channels are combined, and the correct fingering/string information is lost.
In the first case, combining six different staves is problematic and results in lost notes (musescore can only handle 4 voices). In the second case, Musecore guesses the tab from the actual note which often results in poor/impossible tablature and must be manually corrected.

It would be most helpful if we could assign a midi channel to each string on the tablature, and import midi files accordingly - either one string at a time, or in one go. As musescore seems to be 'notation first - tablature second' there may well be some issues in how the standard notation interprets the imported tab, but it shouldn't be insolvable e.g. have an option to ignore note overlaps so as to keep one voice on the standard notation.

screenshot showing midi guitar scale with notes on different strings assigned to different channels (colours)

desired formatting in musescore (manually entered)

importing the midi file to musescore 3 currently results in this

Problem to be solved

ability to import guitar midi files using correct string information

Prior art

No response

Additional context

No response

Checklist

• This request follows the guidelines for reporting issues
• I have verified that this feature request has not been logged before, by searching the issue tracker for similar requests

Start by reproducing the reported MIDI guitar import behavior described in the issue, comparing separate-channel and combined-channel imports with the attached examples. Trace the existing MIDI import path and tablature assignment behavior. Done means guitar MIDI channel assignments reliably preserve the intended string information without losing notes or producing unusable notation.