Wow, 12 bombardes. You must have suffered permanent hearing loss! Yes, those are the bombardes I mean. It's difficult to find a place to practice...I used to shut myself up in a supposedly soundproof concrete-walled cubicle in the university's music department, and people would come from all around to see what was making the racket. I fell in love with that racket the first time I heard it. Between that and my jenday conure (read, "really loud and shrill parrot"), I really do have permanent hearing loss!