i see you do absolutely not know what you are talking about - the grand piano is the instrument with the largest tonal range in music (apart from some electronic things) - fullstop. go and talk to a singer who knows what he is talking about, and tell him that humans can sing 7 octaves - he´ll die laughing.

and only because they say so on some cheap internetsite, it doesnt automatically have to be true - they also tell you you can enlarge your member by 10 inces within 2 days. :D