Central to our musical arguments was the psychology of the main character, played by award-winning actor Andrew Scott. His portrayal of Donny, who lay somewhere on the autistic spectrum, was nuanced and sensitive – providing us with much to work from, from a musical perspective.

Watch the music video for The World Keeps Turning, from the Hinterland / Y Gwyll soundtrack album 

As often happens with the more creative TV projects, whether documentary or drama, there were many unknowns when key decisions had to be made on this...