Hi. What I mean by this question is were there any unwritten rules saying that the soldiers should not aim and shoot at these "musicians" during battles. I know that when you walk in a straight line against your enemy you do not really care where you are shooting but still. I hope you get my point.
More input is always welcome, especially since we only have short posts addressing the matter. Still, they're there. This older answer from u/LordKettering addresses the matter, but it's 7 years old at time of posting, and so caution is warranted. u/TRB1783 also addresses musicians and combat here, though it's a shorter treatment.