Blue Moon

A blue moon is an extra full moon that appears in a subdivision of a year, either the third of four full moons in a season or, recently, a second full moon in a month of the common calendar. Metaphorically, a “blue moon” is a rare event, as in the expression “once in a blue moon”.
Blue Moon is one of my favorite songs and my favorite rendition is by the Cowboy Junkies. Music is often a great inspiration for my paintings.