April 2021 produced 19 #1s across six music shows, shared by 7 artists and 8 songs.
The most wins went to IU (6), followed by Kang Daniel (5) and Astro (3).
The most-awarded song was “Lilac” by IU with 5 wins on 5 shows, then “Antidote” with 5.
Songs that swept five or more shows: “Lilac”, “Antidote”.
First-ever music show wins went to WJSN — 1 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 |
|---|---|---|
| 2021-04-01 | M Countdown | LilacIU |
| 2021-04-02 | Music Bank | CelebrityIU |
| 2021-04-04 | Inkigayo | LilacIU |
| 2021-04-06 | The Show | UnnaturalWJSN |
| 2021-04-07 | Show Champion | LilacIU |
| 2021-04-08 | M Countdown | On the GroundRosé |
| 2021-04-09 | Music Bank | BambiBaekhyun |
| 2021-04-13 | The Show | OneAstro |
| 2021-04-14 | Show Champion | OneAstro |
| 2021-04-15 | M Countdown | OneAstro |
| 2021-04-16 | Music Bank | LilacIU |
| 2021-04-17 | Show! Music Core | LilacIU |
| 2021-04-20 | The Show | AntidoteKang Daniel |
| 2021-04-21 | Show Champion | AntidoteKang Daniel |
| 2021-04-23 | Music Bank | AntidoteKang Daniel |
| 2021-04-24 | Show! Music Core | AntidoteKang Daniel |
| 2021-04-25 | Inkigayo | AntidoteKang Daniel |
| 2021-04-29 | M Countdown | Inside OutNU'EST |
| 2021-04-30 | Music Bank | Inside OutNU'EST |