Concept Art

This is a potrait of Juan Grisdone by Amedeo Modigliani, in 1915, hanging in Metropolitan Museum of Art.
His portrait of Picasso in 1912 is a significant early Cubist painting done by a painter other than Picasso or Braque. Although Gris regarded Picasso as a teacher, Gertrude Stein wrote in 'The autobiography of Alice B. Toklas'. that "Juan Gris was the only person whom Picasso wished away", which i believe to mean that he was Picasso's biggest competition although Gris saw him more as a teacher rather then rival.
he started with a more analytical style of cubism, but soon conversed  into more of a synthetic cubist artist, soon after 1913. But unlike Picasso or Braque he did a daring move and srarted adding colour into collaged pieces, Both Piccaso and Braque used monochromatic coloiurs in thier artwork.


David Hockney

One of Hockney's most well known pieces of art. 'A bigger Grand Canyon' made up of 60 painting and bought by National Gallery of Australia for $4.6 million.
As student of the National College of Art in London Featuring in a exhibition called you contemporaries, alongside Peter Blake, which annouced the movement of British Pop Art, Although in this movemnts his early work shows sign of an expressionist feel to them. Later he would go onto work with photos or more precisely photocollage, in which he took multiple photos example one with his mother and then place them together to make the whole face but bigger.