bgv = background vocals. I asked the same question myself once.
Divorce, sadness, pain? Whatever. You can flat out sing with style, so shine on.
This is a great song, clever lyrics, well presented, well recorded, well mixed. Awesome job.
My only crit might be a look at the acoustic guitar, it sounds a bit DI'ed, did you put a mic on it or run it into the board with a DI somehow? It could have a more "live" feel in the mix, that would match the rest of the elements a bit better imho.
cheers, keep posting dude! Great tune and great style.
-Tom