Slapp Happy did a song called Michelangelo, but about half the melody's carried by the backing.

Jonathan Richman did a song about Picasso - all I know is the line (couplet?) "Pablo Picasso was never called an asshole".

As for "Pebbledash", Acorn4, I'd be careful who you sing that to. Some artists definitely are frauds - but Pollock and Mondrian definitely weren't.