Can music have a meaning? Should music have a meaning? Anyone who has so much as opened a book about classical music, or distractedly read some programme notes, has probably encountered this question. Ever since Liszt and Wagner coined two notorious terms – ‘symphonic poem’ and ‘absolute music’ – the ebb and flow of music history has left a variety of opinions on the shore. In the case of András Keller, founder of the Keller Quartet and Chief Conductor of Concerto Budapest, the answer is unequivocable: music not only can, but must have a message – and it is a musician’s task to convey it, or bring it to light when it is not immediately clear. By Elena Luporini on bachtrack.com