The #1 on M Countdown on 2015-01-22 was “Déjà-Boo” by Jonghyun — win No. 5 for the song and career win No. 5 for Jonghyun (No. 1 on this show). It also won The Show, Show Champion, Music Bank the same week (4 crowns).
“Déjà-Boo” has 6 music show wins in total: 2015-01-17 Show! Music Core, 2015-01-18 Inkigayo, 2015-01-20 The Show, 2015-01-21 Show Champion, 2015-01-22 M Countdown, 2015-01-23 Music Bank. Jonghyun had 5 wins in 2015 up to this date, and this was the artist's first win on M Countdown. The previous week's M Countdown #1 was “Up & Down” by EXID. The other shows that week went to Inkigayo: “Fire” by Mad Clown. Episode data comes from broadcasters' published results (Wikipedia lists, CC BY-SA) and is recounted daily.
| Date | Show | Song · Artist | |
|---|---|---|---|
| 2015-01-20 | The Show | Déjà-BooJonghyun | ★ #1 |
| 2015-01-21 | Show Champion | Déjà-BooJonghyun | ★ #1 |
| 2015-01-22 | M Countdown | Déjà-BooJonghyun | ★ #1 |
| 2015-01-23 | Music Bank | Déjà-BooJonghyun | ★ #1 |
| 2015-01-25 | Inkigayo | FireMad Clown | ★ #1 |