0+1=1 (I Promise You)

0+1=1 (I Promise You) is the second extended play by South Korean boy group Wanna One, a project group created through the 2017 Mnet survival show, Produce 101 Season 2, composed of eleven trainees from different entertainment companies that will promote for 18 months under YMC Entertainment. The album was released digitally and physically on March 19, 2018, by YMC Entertainment, Stone Music Entertainment and CJ E&M Music.[1][2][3]

0+1=1 (I Promise You)
EP by Wanna One
Released	March 19, 2018
Recorded	2018
Length	24:50
Language	Korean
Label	YMC Entertainment Stone Music Entertainment CJ E&M Music
Wanna One chronology
1-1=0 (Nothing Without You) (2017) 0+1=1 (I Promise You) (2018) 1÷x=1 (Undivided) (2018)
Singles from 0+1=1 (I Promise You)
"GOLD" "I Promise You (I.P.U.)" "Boomerang" "WE ARE" "DAY BY DAY" "I'LL REMEMBER" "I PROMISE YOU (Propose Ver.)"
Music video
"I PROMISE YOU (I.P.U.)" on YouTube "BOOMERANG" on YouTube

Background and release

On February 26, Wanna One announced the release date of the special theme track and their second mini-album, titled 0+1=1 (I Promise You).[4] The special theme track, "I Promise You (I.P.U.)" was released on March 5 along with its music video, marking the 333rd day since the group's first public appearance.[5] The title track "Boomerang" was released on March 19 along with the album.[6] "Boomerang" is an electro trap song that talks about one's heart reaching out to a significant other and returning after making a connection.[7][8]

Promotion

Wanna One held a comeback show on March 19, which was broadcast live on Mnet. It showcases the group's performances of their new songs as well as behind-the-scenes footage of their music video.[9][10]

Commercial performance

On March 5, it was announced that the number of pre-orders for the album has surpassed 700,000 copies, breaking the previous record set by the group.[11] "I Promise You (I.P.U.)" topped six online music charts of six major music sites: Melon, Genie, Bugs, Mnet, Naver and Soribada; and achieved a real-time "all-kill" status on the day of its release.[12] The song also won first place on Show! Music Core and Show Champion without any promotion.[13]

Track listing

No.	Title	Lyrics	Music	Arrangement	Length
1.	"Gold"	ASSBRASS 키겐 ESBEE JQ 현지원 (makeumine works)	ASSBRASS 키겐 ESBEE	ASSBRASS 키겐 ESBEE	3:39
2.	"I Promise You (I.P.U.)" (약속해요, Yaksokhaeyo)	별들의전쟁 *(GALACTIKA *)	별들의전쟁 *(GALACTIKA *) 아테나 로빈	로빈	3:40
3.	"Boomerang" (부메랑, bumerang)	Roydo Wonderkid BreadBeat Shaun Kim	Roydo Wonderkid BreadBeat Shaun Kim	Wonderkid BreadBeat Shaun Kim	3:03
4.	"We Are"	GRAVVITY TIME MACHINE	GRAVVITY TIME MACHINE	GRAVVITY TIME MACHINE	3:21
5.	"Day by Day" (보여, boyeo)	정호현(e.one) Party in My Pool(Kevin Dae)	정호현(e.one)	정호현(e.one)	3:06
6.	"I'll Remember" (너의 이름을, neoui ireum-eul)	신쿵 달리	신쿵 BreadBeat 송호진 Wonderkid	신쿵 BreadBeat 송호진 Wonderkid	3:34
7.	"I Promise You (Propose Ver.)" (약속해요 (고백 ver.), Yaksokhaeyo (Gobaek ver))	별들의전쟁 *(GALACTIKA *)	별들의전쟁 *(GALACTIKA *) 아테나	아테나	4:18
Total length:					24:50

Charts

Weekly charts

Chart (2018)	Peak position
South Korean Albums (Gaon)[14]	1
US World Albums (Billboard)[15]	10

Year-end charts

Chart (2018)	Position
South Korean Albums (Gaon)[16]	4

Certifications

Region	Certification	Certified units/sales
South Korea (KMCA)[17]	3× Platinum	750,000^^
^^ Shipments figures based on certification alone.

References

1. "Wanna One heralds golden age with '0+1=1' EP". Kpop Herald. March 19, 2018.
2. "[SBS Star] Wanna One's Golden Age Begins with 'BOOMERANG'". SBS News. March 19, 2018.
3. "[Album review] Wanna One's ill-fated album". The Korea Herald. March 21, 2018.
4. "[SBS Star] VIDEO: Wanna One's Teaser for '0+1=1 (I PROMISE YOU)'". SBS News. February 26, 2018.
5. "Wanna One Releases 'I.P.U' Music Video: Watch". Billboard. March 6, 2018.
6. "Wanna One drops music video teaser for 'Boomerang'". Kpop Herald. March 12, 2018.
7. "Boy band Wanna One doubles down on explosive winning streak with new EP". Yonhap News Agency. March 19, 2018.
8. "Wanna One Return With Bombastic 'Boomerang' Video: Watch". Billboard. March 19, 2018.
9. "[종합IS] "차트 1위 고마워요"…워너원, 매력화수분 컴백쇼". Ilgan Sports (in Korean). March 19, 2018.
10. "'워너원 컴백쇼' 유선호·MXM부터 여자 컬링 대표팀까지···컴백 응원 메시지". Seoul Economic Daily (in Korean). March 19, 2018.
11. "Wanna One's new album logs 700,000 copies in pre-order". Kpop Herald. March 5, 2018.
12. "Wanna One tops 7 music streaming charts with 'I.P.U.'". Kpop Herald. March 6, 2018.
13. "'음악중심' 워너원, 마마무 꺾고 1위…갓세븐·NCT127 컴백[종합]". Chosun (in Korean). March 17, 2018.
14. "Gaon Album Chart – Week 12, 2018". Gaon Chart (in Korean). Retrieved March 29, 2018.
15. "Wanna One Chart History (World Albums)". Billboard. Retrieved 2018-11-30.
16. "2018년 Album Chart". Gaon. Retrieved January 16, 2019.
17. "South Korean album certifications – Wanna One – 0+1=1 (I Promise You)" (in Korean). Korea Music Content Association (KMCA). Retrieved May 12, 2018.