1+1=1
1+1=1 is a collaborative extended play (EP) by South Korean singer-songwriter Hyuna and Dawn. The EP was released on September 9, 2021,[1] through P Nation and distributed by Kakao Entertainment.[2] The EP consists four tracks, including the title track "Ping Pong".[3]
| 1+1=1 | ||||
|---|---|---|---|---|
|  | ||||
| EP by | ||||
| Released | September 9, 2021 | |||
| Length | 11:16 | |||
| Language | 
 | |||
| Label | ||||
| Producer | Park Jae-sang (exec.) | |||
| Hyuna chronology | ||||
| 
 | ||||
| Dawn chronology | ||||
| 
 | ||||
| Singles from 1+1=1 | ||||
| 
 | ||||
Background
    
On August 30, P Nation confirmed that Hyuna and Dawn will release a duet EP.[4] The next day, P Nation unveiled the tracklisting to the EP on their official social media accounts, revealing "Ping Pong" as the lead single.[5]
Release
    
The EP was released on September 9 through many Korean online music services, including Melon.[6] For the global market, the EP was made available on iTunes and Spotify.[7][8] It was also released in physical format.[9]
Music video
    
On September 6, a teaser for the music video of "Ping Pong" was released.[10] On September 9, the official music video of "Ping Pong" was released.[11]
Track listing
    
Credits adapted from track listing[12] and Melon.[13]
| No. | Title | Lyrics | Music | Arrangement | Length | 
|---|---|---|---|---|---|
| 1. | "Deep Dive" | 
 | 
 | 1:53 | |
| 2. | "Ping Pong" | 
 | 
 | 
 | 2:38 | 
| 3. | "XOXO" | 
 | 
 | Philip Kwon | 3:16 | 
| 4. | "I Know" (우린 분명 죽을 만큼 사랑했다) | 
 | 
 | 
 | 3:27 | 
| Total length: | 11:16 | ||||
Release history
    
| Region | Date | Format | Label | Ref. | 
|---|---|---|---|---|
| Various | September 9, 2021 | 
 | [15] | 
References
    
- "현아♥던, 9월 9일 듀엣 컴백…새 앨범 '1+1=1' 로고 모션 공개". Xports News (in Korean). August 31, 2021. Retrieved September 3, 2021.
- "HyunA&DAWN 1+1=1 - EP (Apple Music)". September 9, 2021. Retrieved September 9, 2021.
- ""1+1=1" - EP details". Melon (in Korean). Retrieved 2021-09-09.
- "현아&던, 9월 9일 듀엣 발표…"러블리 커플 호흡, 1+1=1"". Xports News (in Korean). August 31, 2021. Retrieved September 3, 2021.
- "현아♥던, 듀엣 타이틀곡은 'PING PONG'…트랙리스트 공개". Xports News (in Korean). August 31, 2021. Retrieved September 3, 2021.
- ""1+1=1" - EP details". Melon (in Korean). Retrieved 2021-09-09.
- "HyunA&DAWN 1+1=1 - EP (Apple Music)". September 9, 2021. Retrieved September 9, 2021.
- "HyunA&DAWN 1+1=1 - EP (Spotify)". September 9, 2021. Retrieved September 10, 2021.
- "현아 (HYUNA) - 현아&던 EP [1+1=1]". 리스뮤직. Retrieved 2021-09-09.
- "현아&던, 듀엣곡 '핑퐁' MV 티저 공개…티키타카 퍼포먼스". Xports News (in Korean). September 7, 2021. Retrieved September 8, 2021.
- HyunA (2021-01-28), [HyunA&DAWN] - 'PING PONG' MV, retrieved 2021-09-09
- @OfficialPnation (2021-09-05). "HyunA&DAWN 1+1=1 sampler and track list" (Tweet). Retrieved 2021-09-09 – via Twitter.
- ""1+1=1" - EP details". Melon (in Korean). Retrieved 2021-09-09.
- "Gaon Album Chart – Week 37, 2021". Gaon Chart (in Korean). Retrieved September 16, 2021.
- ""1+1=1" - EP details". Melon (in Korean). Retrieved 2021-09-09.
