September 2015 produced 11 #1s across six music shows, shared by 5 artists and 5 songs.
The most wins went to Red Velvet (4), followed by CNBLUE (3) and iKon (2).
The most-awarded song was “Dumb Dumb” by Red Velvet with 4 wins on 4 shows, then “Cinderella” with 3.
No song swept five or more shows.
First-ever music show wins went to VIXX LR, iKon — 2 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 |
|---|---|---|
| 2015-09-01 | The Show | Beautiful LiarVIXX LR |
| 2015-09-15 | The Show | Dumb DumbRed Velvet |
| 2015-09-16 | Show Champion | Dumb DumbRed Velvet |
| 2015-09-17 | M Countdown | Dumb DumbRed Velvet |
| 2015-09-19 | Show! Music Core | Lion HeartGirls' Generation |
| 2015-09-20 | Inkigayo | Dumb DumbRed Velvet |
| 2015-09-22 | The Show | CinderellaCNBLUE |
| 2015-09-23 | Show Champion | CinderellaCNBLUE |
| 2015-09-25 | Music Bank | CinderellaCNBLUE |
| 2015-09-26 | Show! Music Core | My TypeiKon |
| 2015-09-27 | Inkigayo | My TypeiKon |