The material used to build an instrument is not very important for the sound, at least for wind instruments. See http://www.tms.org/pubs/journals/jom/0708/ronc

The material used to build an instrument is not very important for the sound, at least for wind instruments. See http://www.tms.org/pubs/journals/jom/0708/roncone-0708.html http://www.tms.org/pubs/journals/jom/0708/roncone-0708.html for instance. Some professional French horn players playing with a mouthpiece on a garden hose : https://www.youtube.com/watch?v=ZOpWKgLzxQ4 https://www.youtube.com/watch?v=ZOpWKgLzxQ4