The movie 'Cart' recently revealed, "D.O debuted on the big screen as Taeyoung, and he sang the OST 'Shout' for the movie himself." The main OST "Shout" relays the message of never losing hope even in the hardest times. The poetic melody and his emotional voice mixed perfectly to relay the emotions from the movie.
On his participation in the OST, D.O said, "It's my debut in the movies, and it's even more meaningful that I was able to participate in the OST. 'Shout' is a song that matches the movie well, and it'll be able to maximize the emotions and drama in 'Cart' even more."
It'll also be included as the ending credit song of the movie, so moviegoers will be able to hear his voice until the end. The OST for the movie will be released in November.