1. ^{{cite web|title=Official Big Hit What is up with these theories please explain Youtube|url=https://www.youtube.com/channel/UC3IZKseVpdzPSBaWxBxundA|website=youtube.com|publisher=Big Hit Entertainment|accessdate=3 January 2017}}
2. ^{{cite web|title=BTS Official Youtube|url=https://www.youtube.com/user/BANGTANTV/featured|website=youtube.com|publisher=Big Hit|accessdate=3 January 2017}}
3. ^{{cite web|title=2AM Official Youtube|url=https://www.youtube.com/user/2am|publisher=JYP|accessdate=4 January 2017}}
4. ^{{cite web|title=May Doni - Molla Ing (feat. 2AM)|url=https://www.youtube.com/watch?v=v7KFQ8-Uu0s|website=youtube.com|accessdate=13 April 2018}}
5. ^{{cite web|title=Jo Kwon & Whale - Dunk Shoot|url=https://www.youtube.com/watch?v=eNwXqTkSnRU|website=youtube.com|accessdate=13 April 2018}}
6. ^{{cite web|title=Wax's Duet with Jo Kwon Revealed!|url=https://www.allkpop.com/article/2010/03/waxs-duet-song-with-jo-kwon-revealed|website=allkpop.com|accessdate=13 April 2018}}
7. ^{{cite web|url=http://www.unionpress.co.kr/news/detail.php?number=76314|title= 국내 아이돌 20명 'Group of 20'으로 뭉쳐 'Let's Go!' 제작|work=The Union Press|accessdate=October 29, 2010|date=October 12, 2010|language=ko}}
8. ^{{cite web|title=Clazzi - 우리 변한거잖아 (How We Feel) MV 'with Seulong of 2AM'|url=https://www.youtube.com/watch?v=TCYOTV92rpE|website=youtube.com|accessdate=13 April 2018}}
9. ^{{cite web|title=[HD]121229 SBS Gayo Daejun - Dynamic Black - Kikwang, Jinwoon, Lee Joon, Hoya, L.Joe|url=https://www.youtube.com/watch?v=kGxx6TfSsEI|website=youtube.com|accessdate=13 April 2018}}
10. ^{{cite web|title=Jinwoon(2AM), Star Love Fish - 말하지 못한 말(Words I Couldn't Say) MV 스트로베리 익스트림 페스티벌|url=https://www.youtube.com/watch?v=RnMcIyzhvvs|website=youtube.com|accessdate=16 April 2018}}
11. ^{{cite web|title=DJ AVICII Releases "2AM (Levels with Seulong from 2AM)"|url=https://www.soompi.com/2013/05/09/dj-avicci-releases-2am-levels-with-seulong-from-2am/|website=soompi.com|accessdate=16 April 2018}}
12. ^{{cite web|title=Epitone project & seulong- summer night|url=https://soundcloud.com/platonism-pm/summer-night-instrumental|accessdate=16 April 2018}}
13. ^{{cite web|title=Q&A (feat.Jo Kwon)|url=https://www.amazon.com/Q-A-feat-Jo-Kwon/dp/B074DMG1JQ|website=amazon.com|accessdate=17 April 2018}}
14. ^{{cite web|title=The very last first|url=https://www.amazon.com/very-last-first-Melody-Chang/dp/B074DMJKSK|website=amazon.com|accessdate=17 April 2018}}
15. ^{{cite web|title=2AM’s Im Seulong Featured in Yoon Jong Shin’s May Project, "New You"|url=https://www.soompi.com/2014/05/21/im-seulong-featured-in-yoon-jong-shins-may-project-new-you/|website=soompi.com|accessdate=18 April 2018}}
16. ^{{cite web|title=Swings to Release New Single ‘Pool Party’ Featuring Seulong of 2AM, G.NA, and Yoon Jongshin|url=http://www.moonrok.com/swings-release-new-single-pool-party-featuring-seulong-2am-gna-and-yoon-jongshin/|website=moonrok.com|accessdate=18 April 2018}}
17. ^{{cite web|title=Shim Hyun Bo Unleashes "It’s Cold" Music Video ft. 2AM’s Seulong|url=http://www.hypnoticasia.com/shim-hyun-bo-unleashes-its-cold-music-video-ft-2ams-seulong/|website=hypnoticasia.com|accessdate=19 April 2018}}
18. ^{{cite web|title=“Good Start 2015″ ft. AOA’s Jimin and 2AM’s Seulong for “Unpretty Rapstar” tops charts|url=https://www.koreaboo.com/news/good-start-2015%E2%80%B3-ft-aoas-jimin-2ams-seulong-unpretty-rapstar-tops-charts/|website=koreaboo.com|accessdate=19 April 2018}}
19. ^{{cite web|title=Gajah (feat. 랩몬스터) - Single|url=https://itunes.apple.com/us/album/gajah-feat-%EB%9E%A9%EB%AA%AC%EC%8A%A4%ED%84%B0-single/1224952152|website=itunes|accessdate=23 February 2018}}
20. ^{{cite web|last1=Gillian|title=HOMME’s Lee Hyun makes comeback with ‘Your Lips’|url=http://officiallykmusic.com/1-hommes-lee-hyun-makes-comeback-with-your-lips/|website=officiallykmusic.com|accessdate=3 April 2018}}
21. ^{{cite web|title=Lee Hyun releases audio teaser for his emotional ballad comeback song, 'Will There Be a Next Time'|url=https://www.allkpop.com/article/2018/02/lee-hyun-releases-audio-teaser-for-his-emotional-ballad-comeback-song-will-there-be-a-next-time|website=allkpop.com|accessdate=3 April 2018}}