"ソラノシズク" (Sora no Shizuku) is Pianissimo's first album, the title taken from the song of the same name. It was first released on VOC@LOID M@STER 11, which includes 13 tracks both new and old and several or which are remastered. The album "Sora no Shizuku" is an all Kagamine Rin album. Notable songs from the album include "SecretCrush" and "SKY TRAIN", with new tracks being "CharcoalMenthol" (remastered Rin version) and also SecretCrush (Album arrangement version).