I got bad news for you kat, some people have paid a fortune in generators and gas. So those awful "musical insterments" will still work. Worse, those generators make a lot of noise, so they will turn the volumn up HIGHER, if you can imangine it, to drown out the generator.
Personally I think the generator is about as good an insterment to accompony the electric guitars any, if you like the kind of music that has electric guitars.