Completing such works as Study for Improvisation V and Yellow Cow, the collaboration ended with the World War I deaths of August Macke and Franz Marc.  
This artistic group published a namesake almanac that featured folk art and argued that the artificial separation of form and idea could not truthfully express the inner rhythm of the spirit.  A collection of this group's works is held in the former home of Franz von Lenbach and the group met at the home of one of its founders, Gabriele M?nter.  Completing such works as Study for Improvisation V and Yellow Cow, the collaboration ended with the World War I deaths of August Macke and Franz Marc.  FTP, name this expressionistic movement led by Wassily Kandinsky and which often employed an equine motif.
This artistic group published a namesake almanac that featured folk art and argued that the artificial separation of form and idea could not truthfully express the inner rhythm of the spirit.  
Der Blaue Reiter or The Blue Rider