its hard enough the whole band must be in sync the closer the friends usually the easier it is creating songs is an easier matter basically everyone like home work writes a song and a tune to it and...
The guitars and amps are chosen for specific sounds. Almost any band's guitar player will have several different makes and styles, so as to be able to play different tones and styles of music....
Yes, they do work. And they are worth what you pay for. Just dont use regular rubber bands, they are not made to straighten your teeth. Your teeth can get pulled too quickly and it could cause them...