Listen to 행복의 래일 online. 행복의 래일 is a Korean language song and is sung by 모란봉악단. 행복의 래일, from the album 화성 여행 (원본 영화 사운드트랙), was released in the year 2018. The duration of the song is 3:18. Download Korean songs online from JioSaavn.