@Background Pony
 
Same here. I believe that they’re straight, because straight the biological default + I love going against the popular opinion. :P

I never saw either Lyra and Bonbon, or Octavia and Vinyl to be couples, ever.

Bon Bon= Bass  
Lyra= Tenor  
Vinyl= Lead  
Octavia= Baritone (get it? cello. baritone. it makes perfect sense!)

>Equestria’s gayest quartet
 
How fitting.

I only noticed a few of the anachronistic musical piece like Tainted Love and Fortunate Son, others took me a while to notice (had no idea that carnival styled music at the beach was “Girls Just Wanna Have Fun” until I watched a video detailing easter eggs). BioShock Infinite is pretty awesome. :)
 
And to keep this more on topic about the art, really well done, lots of nice coloring and use of lighting.

“Equestria’s Gayest Quartet”.
 
Takes on a whole new meaning here, if you know what I mean.

Celestia only knows where I’d be without ponies…