Special episode of TRI.BE's 'Manual' variety show revealed that girl group members worked with famous choreographers Yuri & Soobin (aka Bart). From credits, fans could learn that Yuri previously worked with SNSD's Yuri, BoA, and EXID. Soobin worked with The Boyz, SuperM, EXO-SC, GHOST9, and TVXQ! The male dancer also worked with BoA and EXID in the past.

Yuri revealed that she is younger than TRI.BE's leader Songsun, and at first she called her by name, but later on it felt weird so she started calling her "Songsun unnie".

Soobin shared that members of TRI.BE, are very energetic and capable of performing very intense and hard choreographies.