I always imagined the musicians to use their drumsticks to strike... And man, I don't want to get poked by one of that banners...
The first twelve are built, I've gone for a set of one full command and spears on the other nine, a solid start.
One thing you could do for the musician is file off the arm for the drum and make a greenstuff strap for it, them cut the drumstick to fit one of the shield arms. Add a spear arm in the other and voila, drummer with a spear.
Well, it was explicitly stated in the rulebook of the 8th, using a drumstick as example. Although I would fear more an Alpenhorn.