This is a patent on a very particular form of translation model that handles rare words, i.e. this paper that all the authors are on: http://arxiv.org/abs/1410.8206
Probably unintended, but you've got a nice Hermann grid illusion (https://en.wikipedia.org/wiki/Grid_illusion) there! Haven't seen that done with colors other than black and white.
Another analysis I'd like to see is how many songs people skip in a row. When I skip a song I end up skipping a bunch of songs until I find just the right one that I want to listen to at that moment, and I speculate that most of the quick skips come in these sorts of runs. If that's true, then it'd be interesting to try and figure out what properties the songs users end up on have as compared to the ones that they skip over.