Abstract art

Hilma af Klint - The Swan No. 1

Vasily Kandinsky - Upwards

Kazimir Malevich - Black rectangle, red square

Piet Mondrian - Composition with Grid IX

Vasily Kandinsky - Squares and Concentric Rings

Paul Klee - New Harmony

Kazimir Malevich - Cat with a green ball

Kazimir Malevich - athlete

Hilma af Klint - The Swan No. 17

Paul Klee - Red Balloon

Piet Mondrian - New York City I

Piet Mondrian - Victory Boogie Woogie

Hilma af Klint - Group VI, Evolution, No. 16

Paul Klee - Oriental Bliss

Vasily Kandinsky - Several Circles

Piet Mondrian - Composition with Blue, Red, Yellow and Black

Vasily Kandinsky - Lyrical

Paul Klee - The Twitter Machine