Tom Service investigates the link between music and colour ahead of Prom 45 and Stravinsky’s colourful folk-ballet Petrushka.

A piece of music can be 'dark' or 'bright' or we could be singing the 'Blues' - but what does that mean? Professor Jamie Ward - an expert in synaesthesia - is on hand to help. Tom delves into a world of musical colour from Messiaen and Copland, Scriabin and Ravel to David Bowie and Beyoncé to discover whether music can ever be colourful.