This is really really cool. Am I the only one who wanted to play just because I wanted to hear more of the song? It makes sense that the motivation to play a little more could be tied to how much of the song you hear. Even though I have heard this song before multiple times, the gameplay aspect of song revelation makes it more fun.
This got me thinking about how shortsighted are artists, musicians and producers, who are not thinking of reaching out to fans through interactive digital experiences rather than simple publishing deals. The music industry profitability is going down the drain and the only way to make people pay a premium would be to invest in thoughtful interactive experiences attached with the music. Games could be one of those but definitely not all of those.