There are different ways of reading and writing music. In music notation, the notes tell the musician exactly how to play something. A graphic score is made up of lots of different images.

Pierre Barreau built an AI that can write symphonies and soundtracks, but he says he's not trying to replace musicians. Instead, he hopes musicians will use these tools to expand their artistry.

When talking to John McEuen you get the impression that the man has done it all. He spent twenty-one years with Nitty Gritty Dirt Band.