Don't U Ever Stop

The single is co-written by SPIN, a frequent songwriter for KAT-TUN who is also known for writing hit singles for Arashi ("Kitto Daijōbu", "Love so sweet", "Pikanchi Double" and "Hero" all reached number 1). The track's music was composed by Shusui, Fredrik Hult, Carl Utbult and additional arrangement was done by Yukihide "YT" Takiyama. The solo tracks featured on the three limited editions are "w/o notice??" (sung by Kazuya Kamenashi), "'" (Junnosuke Taguchi), "LOVEJUICE" (Jin Akanishi), "PARASITE" (Koki Tanaka), "" (Tatsuya Ueda) and "SMACK'" (Yuichi Nakamaru). ==Release and promotion==

KAT-TUN performed the song on television for the first time on Music Station on April 25, 2008 and again on May 2, 2008. The group returned to the show on May 16 to sing it for the third time as part of a medley which included each of their respective solo songs. On May 11, Taguchi and Ueda appeared and performed the song on their kōhai Hey! Say! JUMP's variety show, Hi! Hey! Say, while Tanaka was a guest performer on HSJ's other show, Show wa Hey! Say!, the day after. All three rejoined the rest of the group on May 12 to perform on Fuji TV's Hey! Hey! Hey! Music Champ. Two days later, the band debuted the song on their own show, Cartoon KAT-TUN—the same day the single was released in Japan. On May 15, KAT-TUN made their fourth appearance on SMAP member Masahiro Nakai's Utaban and a day later, sang on Shounen Club Premium. ==Chart performance==

In its first week of release, the single reportedly sold over 381,672 copies and knocked off NEWS' "Summer Time" from the top spot on Oricon's singles chart. It also debuted at number 1 on Billboard's Japan Hot 100. The song's total reported sales currently stand at 447,971 copies. ==Track listings==

• Regular edition track listing • Limited edition 1 track listing • Limited edition 2 track listing • Limited edition 3 track listing Sales and certifications ==References==