A musician always has the same characteristics as the other models in their unit. Similarly, they are always considered to be equipped in the same way as the other models in their unit.
In reality, a model that represents a musician will likely be equipped differently, often carrying their instrument in place of weapons. Any such deficiency in terms of equipment is compensated for by the efforts of those around them to protect the musician, and by the damage that a heavy, brassbound horn or drum can inflict upon the foe when swung in anger.