On the 2 minute one I think I might have got 34, but I can't go much faster. Between looking at the note and then clicking the right button to say which note it is, I don't think it can be done much faster.

I can't anyway... :o

But then I've got to the point now where with guitar in hand I know what note I'm playing, so the game is just something I recommend to others to break the boredom of it...

OK, just had a go.... got 33.... just beat you... ;)