Mood Indigo

This song is especially supposed to feel blue. Although indigo and blue are technically different colors, they can still refer to the same general feeling.

Maybe blue is the color in the middle of this picture where the bass clefs are, and indigo is the color in the corners.

Mood Indigo is one of Duke Ellington's many innovative compositions, and it is especially known for exactly what the title describes. We seem to have had a hard time describing those "down" feelings, as well as many others, so we assign colors to our emotions instead.