For the Zoya Fall 2012 Diva Collection, I picked only 3 shades after scouring the net for their swatches. Song was one of the shades I got which is a super pigmented royal blue shimmer. Song can be a one-coater but I normally applied 2 coats and it dried to a rather flat finish, but a layer of top coat will immediately bring out the shimmer from within.
I compared Song to A-England Order of the Garter, also a royal blue with blue flakie-like shimmer. Order of the Garter was much less pigmented in comparison. For pic below, I have 3 coats of Order of the Garter as compared to 1.5 coats of Song, without top coat.
In real life, the sparkle in Order of the Garter was much more prominent than Song, probably because the shimmer in it was more of a lighter blue/aqua shade. Song was also a tad darker. If I have to choose between these two, I'll definitely pick Order of the Garter! It's the more interesting blue!