It was created in November 1957, a year before the BBC’s fabled Radiophonic Workshop, and was far more influential in shaping the development of electronic music, yet the Polish Radio Experimental Studio (PRES) is now virtually unknown even in Poland. Radio 3’s feature on Sunday night, Poles Apart (produced by Andrew Carter), made the case for its significance, taking us back to those early days of analogue bleeps, bongs, blurps and squelches.