“Munich’s ECM (Edition of Contemporary Music), the legendary label whose remit – just for starters – has embraced jazz-warped Gregorian chanting, Nordic folksongs, Euro-Asian dialogues, and Keith Jarrett’s long-idolised Köln Concert, celebrates its 50th anniversary in November. Big shows in New York, London, and Brussels show the world’s respect for ECM’s unmodish alchemy of old and new, that has a”