The #1 on M Countdown on 2017-05-25 was “Signal” by Twice — win No. 2 for the song and career win No. 21 for Twice (No. 6 on this show). It also won Show Champion, Music Bank, Show! Music Core, Inkigayo the same week (5 crowns).
“Signal” has 6 music show wins in total: 2017-05-24 Show Champion, 2017-05-25 M Countdown, 2017-05-26 Music Bank, 2017-05-27 Show! Music Core, 2017-05-28 Inkigayo, 2017-06-09 Music Bank. Twice had 10 wins in 2017 up to this date, and this was win No. 6 on M Countdown. The previous week's M Countdown #1 was “I Luv It” by Psy. The other shows that week went to The Show: “Shangri-La” by VIXX. Episode data comes from broadcasters' published results (Wikipedia lists, CC BY-SA) and is recounted daily.
| Date | Show | Song · Artist | |
|---|---|---|---|
| 2017-05-23 | The Show | Shangri-LaVIXX | ★ #1 |
| 2017-05-24 | Show Champion | SignalTwice | ★ #1 |
| 2017-05-25 | M Countdown | SignalTwice | ★ #1 |
| 2017-05-26 | Music Bank | SignalTwice | ★ #1 |
| 2017-05-27 | Show! Music Core | SignalTwice | ★ #1 |
| 2017-05-28 | Inkigayo | SignalTwice | ★ #1 |