The birds this August morning emit silvery sounds. Only someone with serious listening difficulties would not detect the silvery music. John Lennon instructed George Martin he wanted the next song covered in a green sound. Curiously, Martin seemed to know what he meant. Alexander Scriabin invented a colour instrument to perform original compositions. Is synaesthesia fad or creative key? Opinion is divided over the sounds of some colours, prominently beige. Is beige the necessary backdrop for much crescendo, filler between outbursts of symphonic extreme? Or is it elevator music, the sound of no hand clapping? Or is beige breathtaking understatement?