Every series consists of six or so different programmes, repeated several times each. Ng picks pieces to fit a theme, and then chooses ensembles from among his enormous pool of talented musicians, with readings or introductions which tie the pieces together. They're laid back and professional, irreverent yet learned, and make for an evening that's both calm and stimulating. It is a pleasing irony that these concerts are Oxford institutions, organised by someone with such an international background: Ng was born in Malaysia and came to Oxford by way of Melbourne and Frankfurt.