Sandy and Frost Millennium are not a song. According to relevant data, Sandy is a song written by Ye, composed by Ye and sung by Echo. This song is included in the album Echo released by Echo 2065 438+02. "Frost and Snow Millennium" is an original Vocaloid song handed to Bi Li Bi Li by COP on June 15 and June 14, 1965. This song was sung by Tianyi Luo and Lezheng Lin.