I'm on Linux and couldn't get this running with Wine but I did get to play it at the demo so I'll have to go by memory unfortunately. I like the concept a lot but I think there needed to be some kind of feedback (visual or aural) regarding the rhythm. In fact, it wasn't even clear to me that the player was supposed to be singing a song, I thought you were just supposed to try to match the frequencies. If the goal had been clearer and you knew the rhythm of the melody it would have been more enjoyable trying to figure out the song I think.