Today Is A Beautiful Day is the second studio album by the Japanese J-pop band supercell, released on March 16, 2011 by SME. The album contains 13 music tracks written by Ryo, and sung by Nagi Yanagi (やなぎなぎ), though officially Yanagi is not a member of Supercell. Five of the tracks were previously released on three of Supercell's singles. Two different editions of the album were released: a regular CD version and a CD+DVD limited edition. Today Is A Beautiful Day peaked at No. 3 on the Japanese Oricon weekly albums chart, and in July 2011 was awarded a Gold Disc by the Recording Industry Association of Japan for having exceeded 100,000 copies shipped in a single year. Five of the songs were used as theme songs for various media: "Kimi no Shiranai Monogatari" was used as the ending theme to the 2009 anime TV series Bakemonogatari; "Hero" was the theme song to Shueisha's manga magazine Aoharu, a special edition version of Young Jump; "Love & Roll" was the theme song to the 2009 anime film Cencoroll; "Hoshi ga Matataku Konna Yoru ni" was used as the ending theme to Type-Moon's visual novel Mahōtsukai no Yoru; and "Utakata Hanabi" was used as the 14th ending theme for the Naruto: Shippuden anime series. Up to and including the release of Supercell's debut album Supercell (2009), songwriter Ryo had been using the Vocaloid singing synthesizer software Hatsune Miku for the vocals of the songs he produced. In transitioning to a human singer, then 21-year-old singer Nagi Yanagi was