Tom Service looks at complexity in music. From Bach fugues to contemporary pop production, musicians and composers love to elaborate ideas to the limits of their imaginations. But when we listen, we only have one chance to hear all that's going on in their music. According to physicist Marvin Minsky, the human brain can only register a maximum of three different musical ideas going on at the same time. So how do we manage to enjoy listening to the rich counterpoint of a Mozart symphony, a Beethoven string quartet, even a highly produced pop song by Janelle Monae? Tom wrestles with ideas of detail versus texture, emotion versus intellectual design and asks, can we hear the wood for the trees?