The four actors will be releasing the CD single (same title as group name) under the name GReeeeN Boys and do cover versions of GReeeeN's hit songs "Kiseki", "Koe" and "Michi". The CD single is produced by GReeeeN's member JIN. The song "Kiseki" will be released via online streaming portals first on 9 November. The group will also be the guests for GReeeeN's 10th anniversary concert held at Saitama Super Arena on 7 January 2017.
Suda commented that even though the four of them have no singing skills to speak of and probably can't sing that well, they still wanted to convey their love of music through this CD and the movie where they sang without any stand-in vocals. Suda also said that their versions will not be merely covers of the originals but will have their personal touch. As such, the producer Koike Kentaro felt that the group should make their CD debut and make their voices known to the world. Prior to the filming, the four of them went through voice training for two months during their free time to prepare for the singing scenes in the movie.
Sources: Nikkansports / Sanspo / Yomiuri Hochi / Sponichi