Grace Williams (1906-77) was one of Wales's finest composers - she left a sizeable body of work, her best-known piece being the orchestral tone-poem Penillion, as well as a lot of chamber music, much of it as yet unpublished. Madeleine Mitchell and friends have just released a recording for Naxos of her chamber music, and Editor-in-Chief James Jolly caught up with the violinist to talk about it.