Most people enjoy music daily and have strong listening preferences. Music – along with love – is often thought of as a universal language. But what makes a collection of sounds a piece of music as opposed to just noise? Can music teach us anything? And is the value of music objective? John and Ken explore what philosophy has to tell us about music – and vice versa – with Peter Kivy from Rutgers University, author of Sounding Off: Eleven Essays in the Philosophy of Music.