they involve fundamental concepts that are unavoidable by the thoughtful person.
Is it one of these:
1. Keith haring
2.claes Oldenburg & coosje van bruggen
3.robert raucshenburh
4.richard Hamilton
5.roy Lichtenstein
6.peter Blake
7.andy Warhol
8.david hockney
Do, do, re,mi, fa, sol, la, sol, fa, mi, re, re, mi, fa, sol, la, la, sol, fa, mi, mi, re
Hope that helped
Foreshortening, it was used to give the illusion of depth.