It’s rare that a dramatic score for a television series becomes a full partner in the storytelling process. That’s one of the reasons I have so enjoyed Anne Dudley’s music for Poldark, the period drama currently playing on PBS’s Masterpiece series (which has already become a sensation in the UK after the BBC aired it earlier this year). Dudley, who was also responsible for the delightful music for another British TV classic,  Jeeves & Wooster, talked with me about the Cornish folk-music roots of her score for Poldark — and why the violin plays such a key role.