In my old band (that would be Follow the Earth), I did a lot of things. Specifically (depending on the song, we switched off) I played drums, guitar, bass, synth, and I did some singing/screaming. In my new "band" (that would be Idunn), I do everything on my own. It's just me!
And I'm actually glad you like The Man With Guns For Arms, as I actually wrote most of that song.