Paul H 
If you thought string quartets only play stuffy and irrelevant music, check out the NPR's latest Tiny Desk Concert, featuring the renown Kronos Quartet. Their version of 'Ohio' by Crosby, Still, Nash, and Young was a revelation and really shone new light on this song. You could sense the outrage of the original in their playing. Marvellous. And their playing of 'Strange Fruit' sung so brilliantly by Billie Holiday, was very affecting and very moving. I thought those two pieces were quite stunning in particular. Well worth a listen.
The Crafty Miss