Gerik singing a cover of the Screamin' Jay Hawkins classic. I imagine him to have voice like that, or relatedly Nick Cave; a big booming voice in a relatively small body.
This was done as a kind of proof of concept. If I can't draw him singing the way I see it in my head, then all the design in the world won't help.
The dramatic close-up is mostly because I haven't worked out the rest of the band yet :P