| I went through the flash tutorial and quizzes and found it to be very helpful.
If you're after constructive criticism - some of the questions were a little too easy to answer without thinking. For example, in the ones where you had to drag and match the two columns, the ones on the left were always in the same order (C, G, D, A etc.) so it became a repetitive motion of dragging "one sharp" to C, which was always on on top, "two sharps" to G which was always second etc. I'd say just mixing up the order of the left hand column on those would make them much more effective questions.
Otherwise nice job and I appreciate you making it. | 
