It’s Sunday afternoon in the Concertgebouw, one of Europe’s most magnificent concert halls, and members of its resident orchestra, theRoyal Concertgebouw Orchestraare milling around the artist canteen, preparing to perform a programme of Bach for a young audience. The atmosphere is relaxed, and the sounds of babbling voices and warm-up arpeggios float through the air. primephonic’s Sarah Jeffery joins five of the musicians during their pre-concert coffee, to chat about concert preparation: