Symphony Moonbeam is a combination of the polygenic symphony trait, the recessive lavender mutation, the homozygous incomplete dominant superarctic mutation and the heterozygous incomplete dominant anaconda mutation. The combination has a grey to lavender background and deep lavender coloured saddles. With each shed they lighten up. The eyes have a solid dark purple colour. Symphony's most distinctive feature is found on the back of the head, where the pattern extending from the head and neck resembles two symmetrical musical notes. In high-expression animals, symphony produces a single bold dorsal stripe. The anaconda mutation reduces the dorsal pattern.