IOI’s “웃으며 안녕,” rendered in English here as “Goodbye With a Smile,” was set for release at 6 p.m. KST on May 4, 2026, as a pre-release track from the group’s third mini album, “I.O.I : LOOP.” The song’s full reported styling is “웃으며 안녕 (Recorded in 2016)(Prod. 진영),” and it has been described as an archive recording built around the members’ voices and emotions from 2016, with Jinyoung participating in the track. 1
The release is part of IOI’s 10th anniversary activity and precedes the full album release scheduled for May 19, 2026. Concerts in Seoul are scheduled after the album, running from May 29 to 31, 2026. 2
IOI “Goodbye With a Smile” Release Details

The main point of the pre-release is its archive status. Reports identify “Goodbye With a Smile” not as a newly recorded single but as a song connected to material recorded in 2016. News1 reported that the song’s theme centers on supporting one another’s futures even while facing an approaching farewell. 2
Jinyoung’s role has also been reported across coverage. TV Daily reported that Jinyoung participated in writing and composing “웃으며 안녕,” while other reports list the track with the production credit “Prod. 진영.” 3 The available source material does not provide additional production credits beyond those details.
| Item | Confirmed detail |
|---|---|
| Pre-release track | “웃으며 안녕 (Recorded in 2016)(Prod. 진영)” |
| English rendering used here | “Goodbye With a Smile” |
| Release time | May 4, 2026, 6 p.m. KST |
| Album | Third mini album “I.O.I : LOOP” |
| Album release date | May 19, 2026 |
| Seoul concerts | May 29-31, 2026 |
| Seoul venue | Jamsil Indoor Stadium |
Album, Members and Concert Schedule
“I.O.I : LOOP” is the third mini album tied to the pre-release track. Star Today reported, citing Swing Entertainment’s announcement, that IOI would release the third mini album “I.O.I : LOOP” on May 19, 2026. 4 The same report said the promotional schedule included the May 4 pre-release song and a YouTube live event. 4
The album has also been reported to include member participation in the music. Ilgan Sports reported that Jeon Somi, Chungha and Yoo Yeonjung were among members who participated in writing and composing across tracks on “I.O.I : LOOP.” 5 The source material does not include a complete tracklist, so no full album sequencing can be confirmed from the available records.
The 10th anniversary activity lineup has been reported separately. TV Daily said the participating members are Lim Nayoung, Chungha, Kim Sejeong, Jung Chaeyeon, Kim Sohye, Yoo Yeonjung, Choi Yoojung, Kim Doyeon and Jeon Somi. The same report said Kang Mina and Zhou Jieqiong are not participating in this activity. 3
After the album release, IOI is scheduled to hold “2026 I.O.I Concert Tour: LOOP” at Jamsil Indoor Stadium in Seoul for three days from May 29 to 31, 2026. 4 News1 also reported that the Seoul concerts would follow the May 19 album release. 2
The reunion context was mentioned on television before the song release. OSEN reported that Chungha and Jeon Somi discussed IOI’s reunion and new-song schedule on the May 3, 2026 broadcast of SBS “Running Man.” Chungha said the members gathered after she asked whether they would do nothing for the 10th anniversary, and she also said the song recorded 10 years earlier was scheduled for release on May 4. 6
Quick FAQ
When was IOI’s “Goodbye With a Smile” released?
The pre-release track “웃으며 안녕 (Recorded in 2016)(Prod. 진영)” was set for release at 6 p.m. KST on May 4, 2026. 1
What is “I.O.I : LOOP”?
“I.O.I : LOOP” is IOI’s third mini album, scheduled for release on May 19, 2026, following the May 4 pre-release. 4 !IOI Goodbye With a Smile 2016 archive track release “Goodbye With a Smile” serves as both the lead-in to “I.O.I : LOOP” and an archival release connected to IOI’s earlier recording period. Based on the confirmed schedule, the track leads into the May 19 album release and the group’s Seoul concert dates at the end of May 2026.
References
- 아이오아이, 10년 전 목소리로 소환한 '재회의 서사'…오늘 '웃으며 안녕' (뉴시스, 2026-05-04)
- 아이오아이, 4일 선공개곡 '웃으며 안녕' 발매…진영 프로듀싱 (뉴스1/다음, 2026-05-04)
- 진영, 아이오아이와 10년만 재회…선공개곡 ‘웃으며 안녕’ 참여 (TV데일리/다음, 2026-04-28)
- 아이오아이, 5월 19일 컴백 확정…9년 만에 설레는 재회 (스타투데이, 2026-04-21)
- 아이오아이, 그 시절 감성 그대로…‘웃으며 안녕’ 오늘(4일) 발매 [공식] (일간스포츠, 2026-05-04)
- 아이오아이(I.O.I) 완전체 비하인드.."10주년이라 하니 한방에 뭉쳐" ('런닝맨') (OSEN, 2026-05-03)