The Pavel Haas, playing Smetena’s 2nd Quartet live on the BBC, starting about 36 minutes into this programme. [Radio programme now longer available.]
They were en route to Aldeburgh: here’s a review of their performance. I foolishly left trying to get tickets until too late, so we weren’t there — but we’ve heard the Pavel Haas play the Janacek and Smetena Quartets at various concerts and the review chimes very much with our experiences of them. If you get a chance to hear them live, grab it.