Are you a singer? Or do you like to sing? If you do then you would definitely had wondered every now and then how high are your own vocal range when you sings right?
It is said that great singers often have at least 4 octave vocal range. That is considered normal to ballad and metal singer. But acquiring 4 and above octave vocal range does not contribute to skills in singing. You may as well have 4 to 5 range or even 6 but even a mental patients can acquire that just because she/he often screams. LOL
Here’s a video as an example of 4 octave vocal range. Maybe you can do it even better or practice doing like in this video to achieve great voice range like that. Tell us what you think!