Remember the good ol'e days when you would play your music and have some cool design dance with the music? itunes uses the visualiser, yall should take it to a new level and use youtube. Playing the music y'all have with a small screen in the corner playng the officail youtube video associated with the song, possibly only certin songs and the rest will be available to only premium users. (given this would only work with the spotify player or some major app updates). The challenges I feel like it would be completily worth the cost, considering youtube sponsership and more traffic to the spotify player, overall a huge improvement!!