He said he was inspired by cowboy and wild west music, explaining how creator Will Davies described The Letter for the King as a Western masquerading as a medieval adventure.
Reflecting on where he wanted to take the music next, Campbell said: “I would love to keep pushing the Western thing.
“We were limited by playing the more Western music by the available moments in the show.
“We couldn’t just splash it anywhere, it was in really when you see our characters out in the big, wide open with New Zealand and the snow-capped mountains in the background.
“I would love to spend more time doing that. I also love following the novices and the kids. Their music is a little bit quirky and indifferent and they’re my favourite part of the show.”
Letter for the King is streaming on Netflix now