I'll post this again because I think it got buried in the melee....
A violin just sitting there is just a piece of wood.
A drum just sitting there is just a piece of wood.
A piece of wood just sitting there is just a piece of wood.
If you bow a violin to make a noise, you have a noisy piece of wood.
If you hit a drum to make a noise, you have a noisy drum.
If you hit a piece of wood, you have a noisy piece of wood.
If you bow a violin in such a way to establish patterns and consistency (Such as having a consistent timbre that produces consistent frequencies at regular time intervals) you are making music.
If you hit a drum in such a way so as to establish patterns and consistency (Such as having a consistent timbre that produces consistent frequencies at regular time intervals) you are making music.
If you hit a piece of wood in such a way so as to establish patterns and consistency (Such as having a consistent timbre that produces consistent frequencies at regular time intervals) you are making music.
Whether or not you're making good music is, as always, open for debate.