Drat!
This thing, this thing OOZES with pottential! I can't give it a higher score in regards that it can be much, much better...
I'm afraid myself, I couldn't make much use of this, my ear's good with pitches and such, but there was absolutely no sound to reinforce what note was given. I've been reered on Solfege all the way, I don't even KNOW what that system of naming notes is called. :o( Perhaps having an option to have it both in that term and standard Solfege would be neat, as well as being reinforced with hearing the note being played, that way you can also practice your pitch in the process instead of mere note naming. :3 A possible idea would be a button of sorts that would identity all the notes on the staff briefly so folks can know what they're dealing with, then maybe up the ant with flats and sharps... Well, you could do a whole heck of alot more with this, I'd like to see you make it happen. On with the review!
Graphics: Simplistic, served it's purpose well. the "Play" icon was nifty.
Style: Sadly, such a thing has been done before, fact you went ahead and made your own out of flash is still an accomplishment for a first timer using action script.
Sound: Blotto. Biggest problem was the total lack there of. :o( Especially considering it all deals with sound in the first place! Kinda defeats the purpose I find.
Violence: Technically zero, but got a 1 by frustrating me with alien things I couldn't even identify. "WTF? That's Sol... But... It's... Ack." -bows head in shame-
Humour: There's just none, sorry. :3
Overall: Coulda been much better, but you've got pottential to get this to be a nifty project, keep it up!