The #1 on M Countdown on 2018-03-15 was “Starry Night” by Mamamoo — win No. 3 for the song and career win No. 14 for Mamamoo (No. 3 on this show). It also won The Show, Show Champion, Music Bank, Inkigayo the same week (5 crowns).
“Starry Night” has 5 music show wins in total: 2018-03-13 The Show, 2018-03-14 Show Champion, 2018-03-15 M Countdown, 2018-03-16 Music Bank, 2018-03-18 Inkigayo. Mamamoo had 3 wins in 2018 up to this date, and this was win No. 3 on M Countdown. The previous week's M Countdown #1 was “Love Scenario” by iKon. The other shows that week went to Show! Music Core: “I Promise You (I.P.U.)” by Wanna One. Episode data comes from broadcasters' published results (Wikipedia lists, CC BY-SA) and is recounted daily.
| Date | Show | Song · Artist | |
|---|---|---|---|
| 2018-03-13 | The Show | Starry NightMamamoo | ★ #1 |
| 2018-03-14 | Show Champion | Starry NightMamamoo | ★ #1 |
| 2018-03-15 | M Countdown | Starry NightMamamoo | ★ #1 |
| 2018-03-16 | Music Bank | Starry NightMamamoo | ★ #1 |
| 2018-03-17 | Show! Music Core | I Promise You (I.P.U.)Wanna One | ★ #1 |
| 2018-03-18 | Inkigayo | Starry NightMamamoo | ★ #1 |