The idea of a "duet" conjured up several images for me; music, friendship and symbiotic relationships. (I can thank Star Wars for introducing me to "symbiotic," think Jar Jar Binks.) ;) We all know we need each other to be in harmony but we also need lots of "duets" to survive. The sun and the moon are perfect examples and I wanted to showcase these along with my young musicians to represent "Duet" on these book covers.
(I also just wanted to play around with designing a book cover. It turned out to be great fun.)