[MU4 Issue] chord symbol always plays as piano, even in solo guitar score

[MarcSabatella]

Describe the bug Chord symbol playback always plays as piano, even for guitar scores, no way to alter this (other than specify a different soundfont entirely)

To Reproduce Steps to reproduce the behavior:

1. Create score using solo guitar template
2. Add a chord symbol
3. Press Play

Result Chord symbol plays with piano sound

Expected behavior Chord symbol should play with with guitar sound by default, or else a way to make it play that way should be provided

Platform information

• OS: Linux

Additional context There was some debate over what the actual defaults should be when chord symbol playback was first implemented for 3.5. At first, it used the sound of the current instrument, but this sounded really bad and unexpected when writing a lead sheet with voice or saxophone as the instrument. So we made it piano always by default, but guitarists complained it should be guitar if the score is guitar. We decided to handle that special case by hard coding it into the solo guitar template. Not necessarily ideal, but there haven't been many complaints. A better solution might have been to add a tag to the instrument definition itself to specify whether it should provide its own chord symbol sound (or to specify a different default).

In any case, having the ability to specify the sound in the mixer would of course provide a workaround in any case where the default wasn't what you wanted. But failing that, at least implementing the solo guitar template hack would probably be appreciated by most guitarists. Assuming that method could even still work - it seems the chord symbol channel is no longer per-instrument.