In the Tower of Sleep , by andre masson , 1938 , Mythology
A painting of a man riding a giant horse.
A painting of a demon is depicted.  The demon has a large head and is wearing a red robe.  He is holding a large sword in his hand.  There is a fire coming out of his head.  Around the demon are various shapes and colors.  On the left side of the demon is a person playing a musical instrument.