"Uchōten" (有頂天) "ecstasy", is a single by Japanese rock duo B'z. It was released on January 14, 2015.[1] It is the only single of their nineteenth album Epic Day.
The song debuted in number one on the weekly Oricon Singles Chart, with 133,980 copies.[2] It also gave B'z their 64th combined week in the number one position, beating Pink Lady's 1979 record of 63 combined weeks.[3] In addition, the song reached number one on the Billboard Japan Hot 100 and the Top Singles Sales chart.[4][5] It was ranked #37 at Oricon's 2015 year-end chart[6] and #39 at Billboard Japan's.[7] The Recording Industry Association of Japan certified the single Gold for its sales of 100,000 copies.[8]
