Extended Techniques, Abbreviated

What is music? If an instrument is a tool with which we make music, is anything made with that tool then music? On the other hand, is any implement used in the making of music therefore an instrument—the enormous hammer in Mahler’s Symphony no. 6, cannons in Tchaikovsky’s 1812 overture, and even the slow snapping of plywood in Saltwater Lung by contemporary composer J.L Marlor? Are the performers ...