Brassband

[kmbgit]

Resolves: Remove "brass quintet" from PR#5567

#5567

There's some confusion in the instruments.xml file about whether "genre" means "musical genre" (e.g. "jazz") or "ensemble genre" (e.g. "orchestra", "concert band", "marching band"). Taking the latter meaning, "Brass Band" is a legitimate ensemble genre because a lot of music is written for this instrument grouping and the grouping contains unique instruments (most notably Bb Baritone, Eb Bass, Bb Bass).

I originally submitted this change under PR#5567 which also included "Brass Quintet", but I agree with the argument that X-tets will lead to exponential grown of the category list so I've removed it here.

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[Jojo-Schmitz]

Rebase needed. Also squashing into just one commit

[vpereverzev]

Archived due to inactivity (but we can re-open it again once the author will come back)