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".
Exist Trace
In 2013, Exist Trace introduced their 'new world' musical direction, where long-time main lyricist/composer miko would officially be taking a dual-vocal position with Jyou. The twin vocal style was emphasized on 2013's single "Diamond". In 2014's "Spiral Daisakusen", the pair again share front billing and the center spot on the music video. The first album to fully incorporate the twin vocal style, "World Maker" (2014), revealed an improved duet system, where vocals are typically heavier towards Jyou in allocation, but making good use of miko's sweeter counterbalance. After an album gap of 1.5 years, the band released the "This Is Now" mini-album, an energetic offering with more of a metal feel than previous releases (including a return to growling from Jyou and backup snarls from Omi and Naoto), as well as re-recorded versions of the singles "Twin Wings" and "Shout Out". In Japan, the EP sold out within a day, across such stores as ZEAL LINK, Disk Union and BRAND-X.