"Y@NDERELLA SMiLE" is a compilation album by U-Rythmix records. It contains a total of 11 tracks, all sung by IA, GUMI, Hatsune Miku, Megurine Luka and Kagamine Rin.
A crossfade of the album can be heard on here.
The album and album + DVD is available on Amazon.
The album is purchasable on avex, Rakuten and toranoana.