Willem is a wonderful artist and highly renowned for his drawings in the press, where he is seen as satirist and poet at the same time; he might sometimes seem fierce but he's always funny. He says he draws "to help the readers to think" as he constantly battles against stupidity, war and injustice. In his coloring book, our cartoonist celebrates the lives and talent of the great jazz musicians. The vignettes are placed side by side, in the same way as comic strip or a movie, just waiting for you to give them that Technicolor finish.