The Chopin nocturnes consist of 21 pieces for solo piano written by Frédéric Chopin between 1827 and 1846.
Answer: Monet's style notably changed towards his later life as he sought to pursue even more means of depicting natural lights effect on different scenes. One example of this was his series of paintings of Haystacks on his property in Giverny.
Explanation: hope this helps-
Pretty sure it's ballad. Although I've never heard of a chorale before :/