Must Listen was the follow up album to SE7EN's debut, Just Listen. The album featured the number one hit, 열정, as well as the follow up radio single 문신. During the Must Listen era, SE7EN released the single, One More Time [Remix]. The song was not featured on the album.
^"'휠릴리' 이수영, 골든디스크상 대상 차지" ['Whistling' Lee Soo-young wins Golden Disc Awards grand prize]. Joy News (in Korean). Naver. December 2, 2004. Retrieved June 11, 2021.{{cite web}}: CS1 maint: url-status (link)
^"이수영 MBC `10대 가수' 대상 2연패" [Lee Soo-young wins MBC Top 10 Singer grand prize two years in a row]. Yonhap News (in Korean). Naver. January 1, 2005. Retrieved June 11, 2021.{{cite web}}: CS1 maint: url-status (link)
^"보아 뮤직비디오 페스티벌 최우수 작품상- m,net km" [BoA wins best music video at Mnet KM Music Video Festival]. Herald Economy (in Korean). Naver. December 4, 2004. Retrieved June 11, 2021.{{cite web}}: CS1 maint: url-status (link)
^"비 서태지 거미 유진 등 올해 뮤비가수 후보선정" [Rain, Seo Tai-ji, Gummy, Eugene and more nominated for music video awards]. Star News (in Korean). Naver. November 8, 2004. Retrieved June 11, 2021.{{cite web}}: CS1 maint: url-status (link)
^2004.07월 – 가요 음반 판매량 [2004.07 – Sales volume] (in Korean). Music Industry Association of Korea. Archived from the original on January 21, 2005. Retrieved May 8, 2021.
^2004년 가요음반판매량 [2004 Album Sales Figures] (in Korean). Recording Industry Association of Korea. Archived from the original on July 18, 2018. Retrieved November 28, 2014.