Which painting was based on a true incident and conveyed an obvious political statement?

Look at this painting by leonardo da vinci. this painting demonstrates da vinci's use of which of these to enhance the emotion of a painting

Pitches moving in a downward pattern are called

Although many musicians participated in the bebop revolution, and history has undoubtedly forgotten many who were in the trenches of the harlem jam sessions, it is clear that the most important and influential architects of bebop were and