What is modern art? Why do we either love it or loathe it? And why is it worth so much damn money? Join Will Gompertz, the BBC Arts Editor, and probably the world's first art-history stand-up comedian, on a dazzling audio tour that will change the way you think about modern art forever. In the fourth of this 20-part course, you can discover how three great artists - van Gogh, Gaugin and Seurat - changed the look of modern art with radical reimaginings of colour, line and subject matter. And find out which one of them was an arrogant self-publicising dandy, bully and a syphilitic schemer. If you want to see the images in question, just use the accompanying pdf, or follow the links. Post-Impressionism is part of a downloadable audiobook series taken from the book What Are You Looking At?: 150 Years of Modern Art in the Blink of an Eye. Future titles include Impressionism, Cézanne, Cubism and Pop Art. You can take the whole course, or pick and choose which movement suits you. Whether you are a sceptic or an art lover, this funny, lively and accessible course on modern art is bound to make your next gallery or museum visit a little less intimidating, and a lot more interesting.