On Saturday, December 27, ILLIT's Wonhee was reported to cover IU's iconic track, Good Day, which was released back in 2011. The performance will be rolled out at the upcoming annual year-end music festival, 2025 MBC Gayo Daejejeon. Given the high vocal range and multiple voice notes in the song, many fans and netizens were surprised by Wonhee's bold song choice.
Many artists and critics in the industry consider Good Day to be one of the hardest songs to cover in the K-pop industry. However, given that the ILLIT idol has showcased her strong vocals on multiple occasions, through the group's discography, and also her other covers of IU, such as Merry Christmas Ahead.
Therefore, fans have been eagerly awaiting the live performance of Wonhee's cover of IU's Good Day at the 2025 MBC Gayo Daejejeon on December 31. Here are a few fan reactions regarding the same:
"one of hardest kpop songs to sing btw and i just know she ate that 😭 dream coming true- my wonhee as iu’s daughter agenda is thriving🙂↕️" said a fanone of hardest kpop songs to sing btw and i just know she ate that 😭 dream coming true- my wonhee as iu’s daughter agenda is thriving 🙂↕️
More fans and netizens expressed their reactions to ILLIT's Wonhee reportedly covering IU's Good Day.
the fact that she is covering one of the hardest if not the hardest kpop song ever while being ROOKIE is literally crazy of her
If this rumor is true, it’s not just a cover it’s a rite of passage. ‘Good Day’ has humbled legends. If Wonhee pulls this off, she’s officially announcing herself as more than a rookie… she’s stepping into main character territory. 🎤✨
From one Nation's little sister to another
this gen nation's little sister covering a song of THE nation's little sister
Others also shared their thoughts and opinions regarding the same.
wonhee is really covering good day by iu and i manifested it like 10 MONTHS ago- i’m so proud i can’t wait to see it 😭
My wonhee vocals meal is coming
Covering her role model, so proud of her
now i need to see wonhee cover good day by iu like I just know she would do so good at it 😭!!
Complete performers lineup at the 2025 MBC Gayo Daejejeon: ILLIT, LE SSERAFIM, CORTIs, Stray Kids, and more
The 2025 MBC Gayo Daejejeon is expected to take place on December 31, at 8:50 PM KST, with a hybrid venue set up broadcasting from the MBC Dream Center in Ilsan and the Sangam MBC Broadcasting Center in Seoul. The event will be hosted by SHINee's Choi Min-ho, Hwang Min-hyun, and ALLDAY PROJECT's Annie.
The 20th edition of the annual music festival is expected to gather several K-pop artists, from soloists like TXT's Yeonjun to rookie groups like KiiiKiii, IDID, and more. Here's the complete performance lineup of the upcoming year-end event, 2025 MBC Gayo Daejejeon:
- aespa
- ALLDAY PROJECT
- ATEEZ
- BEATPELLA HOUSE
- BOYNEXTDOOR
- CORTIS
- HANRORO
- Hearts2Hearts
- IDID
- ILLIT
- ITZY
- IVE
- izna
- KickFlip
- KiiiKiii
- LE SSERAFIM
- LUCY
- MEOVV
- Minho
- NCT DREAM
- NCT WISH
- NEXZ
- NMIXX
- PLAVE
- RIIZE
- Stray Kids
- THE BOYZ
- TREASURE
- TWS
- TXT
- TXT's Yeonjun
- YB
- ZEROBASEONE
In addition to the regular performances, the K-pop artists are also expected to roll out collaborations and never-before-seen performances at the upcoming music festival. Here are all the special stages that can be expected at the upcoming year-end music festival:
- TWS - Special Stage
- HANRORO and TXT's Taehyun
- Hearts2Hearts' Ian, izna's Bang Jee-min, and ILLIT's Wonhee - Special Stage
- YB and Stray Kids' Seungmin
- Hearts2Hearts, ALLDAY PROJECT, KickFlip, KiiiKiii, CORTIS, and IDID - 2005 hits medley with Y2K interpretations
- IVE's Liz - Special Stage
- ILLIT - Special Stage
- ZEROBASEONE’s Han Yu-jin, TWS’s Kyungmin, NCT WISH’s Ryo and Sakuya, NEXZ’s Hyui and Yuki, MEOVV’s Narin, izna’s Ryu Sarang, Choi Jungeun, KickFlip’s Donghyeon, Hearts2Hearts’ Yuha and Stella, and IDID’s Park Seong Hyeo - Group performance by 2007-born idols
Therefore, fans and netizens have been eagerly awaiting the performances at the 2025 MBC Gayo Daejejeon.
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Edited by Aishwarya Sai

1 hour ago
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English (US)