I think, I've seen a comic, that told the story of how Vinyl and Tavi became friends. Vinyl was born in a rather noble family that wanted (=forced) her to play violin, while Tavi came from kind of a hippie family, where "do whatever you please" seemed to be the motto. Both were really not satisfied with their lives (or parents), but one day they ran into each other by accident, and dropped their funky shades and Violin towards the other.



This picture of yours instantly reminded me of that story (for obvious reasons).