May 2019 produced 20 #1s across six music shows, shared by 9 artists and 9 songs.
The most wins went to NU'EST (4), followed by BTS (3) and Twice (3).
The most-awarded song was “Bet Bet” by NU'EST with 4 wins on 3 shows, then “Fancy” with 3.
No song swept five or more shows.
First-ever music show wins went to The Boyz, NU'EST, Kim Jae-hwan — 3 artists in total.
Counts are recomputed every morning from each show's published results (Wikipedia lists, CC BY-SA). Weeks without a broadcast or record are shown in grey; dates open episode pages.
| Date | Show | Song · Artist |
|---|---|---|
| 2019-05-01 | Show Champion | FancyTwice |
| 2019-05-02 | M Countdown | FancyTwice |
| 2019-05-05 | Inkigayo | FancyTwice |
| 2019-05-07 | The Show | Bloom BloomThe Boyz |
| 2019-05-08 | Show Champion | Bet BetNU'EST |
| 2019-05-09 | M Countdown | Bet BetNU'EST |
| 2019-05-10 | Music Bank | Bet BetNU'EST |
| 2019-05-11 | Show! Music Core | Boy with LuvBTS |
| 2019-05-12 | Inkigayo | Boy with LuvBTS |
| 2019-05-14 | The Show | The Fifth Season (SSFWL)Oh My Girl |
| 2019-05-15 | Show Champion | The Fifth Season (SSFWL)Oh My Girl |
| 2019-05-16 | M Countdown | The Fifth Season (SSFWL)Oh My Girl |
| 2019-05-17 | Music Bank | Boy with LuvBTS |
| 2019-05-22 | Show Champion | Bet BetNU'EST |
| 2019-05-23 | M Countdown | Ah YeahWinner |
| 2019-05-26 | Inkigayo | Kill This LoveBlackpink |
| 2019-05-28 | The Show | Begin AgainKim Jae-hwan |
| 2019-05-29 | Show Champion | Begin AgainKim Jae-hwan |
| 2019-05-30 | M Countdown | EclipseGot7 |
| 2019-05-31 | Music Bank | EclipseGot7 |