Overall, I like the idea.  One thing that seems beneficial to me would be if the theme of the song communicates the fact that Bitcoin is a force to be reckoned with in contrast to having the song be some kind of novelty, pop song, like Pac-Man Fever.  At the same time, it shouldn't go in the direction of force so that it comes across as a profanity filled gangsta rap song either.  It needs to be an anthem that will stick around forever like Freebird, or Stairway to Heaven.