Song: "Like It"
Reason: 'Vertical Live' performance on Dingo's YouTube channel

Song: "Couple"
Reason: 'Infinity Challenge's 'Saturday Saturday Song' special

Song: "Shangri-La"
Reason: '2017 MBC Gayo Daejaejeon' performance

Song: "Up & Down"
Reason: Hani's viral fancam

Song: "Me Gustas Tu"
Reason: Rainy fancam

Song: "Making a New Ending For This Story"
Reason: 5-win streak and 'honorary graduation' on 'Duet Song Festival'

Song: "Bar Bar Bar"
Reason: Dance and concept going viral on Twitter

Song: "Female President", "Into the New World"
Reason: President Park Geun Hye's impeachment

Note: These two songs were grouped together because the songs rose in the charts for the same reason (near the same time period). Also, Jessica is included in the photo because "Into the New World" is a song with 9 members.

Song: All past title songs, but most notably "Hello"
Reason: 'Produce 101' Season 2 appearance

Song: "Downpour"
Reason: 'Produce 101' Season 2 performance by Minhyun, Sungwoon, Kim Jae Hwan, Yoon Ji Sung, and Kwon Hyun Bin during position evaluation round

Song: "I'm Fine Thank You"
Reason: RiSe and EunB's fatal car accident

R.I.P, RiSe and EunB

Song: "Lonely" featuring Taeyeon
Reason: Suicide


R.I.P., Jonghyun

If you or someone you know is at risk of self-harm or suicide, seek help as soon as possible by contacting agencies specializing in crisis intervention and suicide prevention in the United States and abroad.

Song: "Shape of You"
Reason: 'Produce 101' Season 2 performance by Noh Tae Hyun, Kim Dong Han, Kim Tae Dong, Justin, Park Sung Woo, and Lee Jun Woo during their position evaluation round.