Can Malevich's Black Square be considered art?
16 July 2014 Last updated at 12:43 BST
The divisive painting Black Square is to go on show at the Tate Modern as part of an exhibition on Russian modernist painter Kazimir Malevich.
The work, a square of black oil paint on a white canvas, was first exhibited in 1915.
The BBC's Will Gompertz and Turner Prize winning artist Martin Creed debate whether this "bold and brave" piece can be considered art.
First broadcast on BBC Radio 4's Today programme on Tuesday 16 July.