I think some bands thrive on the idea of changing instruments. When they're off their real instrument, the ability to go very far from the original idea is reduced.
The music becomes something that is its own entity.
In other words, an instrument should be an extension of you; it's supposed to sound like you - the way you walk, the way you dress, you know.
My guitar is not a thing. It is an extension of myself. It is who I am.
A guitar is a very personal extension of the person playing it. You have to be emotionally and spiritually connected to your instrument. I'm very brutal on my instruments, but not all the time.
Each guitar has its own character and personality, which can be magnified once the player engages in beatin' it up
Each instrument has something to say to you. It's got its own character. Each horn has its own character and will say to you certain things. If you violate that, it's almost a sacrilege!
It was sort of an experiment to try to leave the violin. Can I be a real person without this thing? It was a big part of my identity.