“21” is the 7th track of DEAN’s debut EP “130 mood : TRBL”. Being the 7th track, it is technically the final track, however, in an interview DEAN stated that the track order was reversed. This makes the album’s intended order backwards (7-1), with “21” as the planned first song of the album.

This song reflects the inception of a romance – and the proceeding hesitation and lacking of trust experienced by both parties. Being the planned first song, it chronologically incites latter themes of 130 mood : TRBL – having a love, to separation and post-breakup.