Hatsune Miku
One of the Vocaloid compilations, "Exit Tunes Presents Vocalogenesis feat. Hatsune Miku", debuted at number-one on the Japanese weekly Oricon album charts dated May 31, 2010, becoming the first Vocaloid album ever to top the charts. Another album, "Supercell", by the group Supercell also features a number of songs using Vocaloids. Other albums, such as 19's Sound Factory's "First Sound Story" and Livetune's" Re:package", and "Re:Mikus" also feature Miku's voice. Other uses of Miku include the albums by Absorb and by OSTER-project. She had sung the original Nyan Cat called "Nyanyanyanyan!" by daniwell-P. Kagamine Len and Rin's songs were covered by Asami Shimoda in the album "Prism" credited to "Kagamine Rin/Len feat. Asami Shimoda". Another song original sung by Miku, "Color", was covered by Maria, and featured as the opening theme of the 2011 anime series "Freezing".
Miku Sawai
She released her first album "Sentimental" on June 5, 2013. She then released the single , whose title track was used as the first ending theme to the 2013 anime television series "Kill la Kill"; the single peaked at 37 on the Oricon weekly charts. She released the single on August 13, 2014, whose title track is used as the first ending theme to the anime television series "Akame ga Kill!". She released the single on January 28, 2015; the title track is used as the ending theme to the anime television series "".