Now that may just be sleep-deprivation talking, but... if there can be such a thing as crystal ponies and wooden wolves, not to mention the myriad of variations present in the fandom , such as ponies made of chocolate, GAK-ponies, robot-ponies etc -- then this image conjures up the concept of magical, sentient beings of music existing on a purely abstract plane, only ever interacting with the "physical" world through means of their song being played. "Vinyl" would tour all clubs by virtue of being a song played there, and "Octavia" would find herself most at home in concert halls, with large orchestra's playing the symphony that is her very being.The notes-line between the two of them implies some form of connection - derivation, one drawing on inspiration from the other... or perhaps "Ocatavia" and "Vinyl" sharing part of their leitmotif, mayhaps in the form of remix on Vinyl's part...? Although if "Vinyl" is in part a remix of "Octavia", that'd probably make their relationship a tad complicated. "..." "..."