Sinfonia Cymru at the Bristol Proms 2014 This image appears in the gallery:Sinfonia Cymru: Towards a Staged Concert at the Bristol Proms 8. Sinfonia Cymru at the Bristol Proms 2014 The performers improvise in the key of F at the Bristol Old Vic. Photo: Andy Squire 9 images See the full gallery: Sinfonia Cymru: Towards a Staged Concert at the Bristol Proms