At a sprawling car plant in the suburbs of north-eastern Istanbul mechanics are busy repairing camshafts and dynamos, applying blow torches to the undercarriages of a range of luxury cars and retouching paintwork. Visitors to the building are met by signs reading: “Sheer Driving Pleasure” and “Check Your Engine”. Upstairs, away from the mechanical buzz, fine-tuning of a completely different kind is going on as the Borusan Istanbul Philharmonic Orchestra is taken through its paces by its vivacious Austrian conductor, Sasha Goetzel.