Hehe, this was a commish for ~Maddog3060, of Luna rocking out and dressed as Joakim Brodén, the lead singer of a Swedish metal group called Sabaton. (Here's a picture of the feller: [link] ) All in all, an interesting commish. Hadn't done anything like this before to tell the truth.
I'd imagine the Royal Canterlot Voice comes in handy for metal. x3
For ~Maddog3060's use only, unless you have his permission.
He also would like it noted that this: [link] is the song being sung by our dear princess here. ^w^