I haven't mentioned it canonically yet, but William's band is called El Bando Del Amor ("The Side of Love" or just "Love's Side")! There's going to be a running gag about it. It's going to become funny. Don't worry.

Anyways, here's William doing some serious emulation of Elvis. I used a still from Jailhouse Rock as reference because I'm not good enough to draw those kinds of moves without some help. But I made that background all by myself (look at me, ma)!

Work it, Will. Work that cowboy-greaser butt.