The tree Graces

reads the myth and look for pictures in

http://www.museodelprado.es/en/visit-the-museum/15-masterpieces/work-card/obra/the-three-graces/

They are the three daughters of Zeus and the nymph Eurynome and they are the goddesses of “Radiance,” “Joy,” “Fruitfulness,” “Splendor,” “Mirth,” “Good Cheer,” and many other things.  The three of them preside over happy events amongst mortals and gods -- gatherings with friends, dances and celebrations. They would also dance for Apollo to the beautiful music from his lyre, and they would inspire mortal artists with abilities – similar to the Muses.