Fifty years ago, the Proms became the scene of a protest against the Soviet invasion of Czechoslovakia. It was a night of high drama, says Phil Hebblethwaite, defined by Russian cellist Mstislav Rostropovich giving a performance that has gone down in legend
One of Peter Zummo's much-celebrated collaborations with the late Arthur Russell, Zummo With An X, was reissued this year by Optimo Music. Robert Barry caught up with Zummo via email to discuss his own musical history and channeling the sounds of the city