Mr.Children is a Japanese pop rock band formed in 1988 by Kazutoshi Sakurai, Kenichi Tahara, Keisuke Nakagawa, and Hideya Suzuki. As a group, they are one of the most successful Japanese rock artists. They are the second best selling artists in Japan, having sold over 50 million records and creating the "Mis-chil Phenomenon" in the mid-1990s in Japan. They held the record for the highest first week sales of a single in Japan for 15 years, with 1.2 million copies of their 10th single "Namonaki Uta", have 30 consecutive number 1 singles, replaced Glay as the all-male band (with 3 or more members) to have the most number 1 albums on the Oricon charts, and won the Japan Record Award in 1994 for "Innocent World" and in 2004 for "Sign". The band's music is mainly composed and written by lead singer Sakurai, with the exception of the Suzuki-penned songs "Asia" and "#2601" from the albums Atomic Heart and Discovery, and occasional collaborative song writing with producer Takeshi Kobayashi.