The cast members returned to their busy life after they returned from Indonesia. During the lull in his schedule, Leeteuk met up with his frequent collaborator in composing, Team One Sound,[b] to choose the music for the soundtrack from their list of compositions. They decided to use the music that Leeteuk previously used for his fanmeeting event in Japan. Changmin became their lyricist as he had shown his skill in writing rhyming lyrics during the travel. After the song is written, Leeteuk, Shindong, Eunhyuk and Donghae recorded the soundtrack. Yunho and Changmin did not participate because of their busy schedules. Shindong edited the music video at his production house office, the Walala Production. The cast, except Shindong who was ill, regrouped at the SMTown Live in Tokyo 2019 concert, which was held on 3 – 5 August 2019.[21] In between the performances, they reunited backstage and watched the finished music video together, while reminiscing about their trip. (Source: Wikipedia)