星のウタ" (Hoshi no Uta) is Pianissimo's second album, the previous album being Sora no Shizuku. It was first released on VOC@LOID M@STER 13, which includes 9 tracks both new and old and several or which are remastered. The album Hoshi no Uta is an all Kagamine Rin album. Notable songs from the album include "Kudryavka" and "Insanity Girl", with new tracks being "RainRainRain" and also "Solea". The album was available for order in Toranoana, but is no longer available for order. The crossfade of the album can be found in Niconico.