Abdulnasser Gharem
Abdulnasser Gharem (Saudi Arabia, 1973) is a Saudi Arabian artist and lieutenant colonel in the Saudi army. His conceptual art spans installation, performance, and painting, often addressing themes of authority and social issues. Notably, his installation 'Message/Messenger' set a record at auction in Dubai in 2011.

Artwork by John Baldessari
What is conceptual art?
Sometimes referred to as Conceptualism, this is an art form where the idea(s) or concept(s) behind the work take precedence over material concerns and traditional aesthetics. Many conceptual artworks can be created by anyone simply by following written instructions. The concept or idea is the most essential aspect of the artwork.