(+ +)

On October 2, 2016, Blockberry Creative announced that they would be debuting their first girl group through an 18-month long pre-debut project.{{Cite web|url=http://star.ohmynews.com/NWS_Web/OhmyStar/at_pg.aspx?CNTN_CD=A0002260168|title='이달의 소녀' 앞으로 기대되는 이유|date=2016-11-13|website=OhmyStar|access-date=2018-08-16}} Between October 2016 and January 2017 members HeeJin, HyunJin, HaSeul and YeoJin were introduced.{{Cite news|url=http://tenasia.hankyung.com/archives/1027274|title={{!}} '이달의 소녀' 희진, 서울 이어 파리 티저 공개 '역대급 스케일'텐아시아|date=2016-10-03|work=텐아시아|access-date=2018-08-16|language=ko-KR|archive-date=September 4, 2019|archive-url=https://web.archive.org/web/20190904115813/http://tenasia.hankyung.com/archives/1027274|url-status=dead}}{{Cite news|url=http://tenasia.hankyung.com/archives/1077919|title={{!}} 이달의 소녀, 하슬 공개.. 톰보이 매력텐아시아|date=2016-12-08|work=텐아시아|access-date=2018-08-16|language=ko-KR|archive-date=July 28, 2017|archive-url=https://web.archive.org/web/20170728204146/http://tenasia.hankyung.com/archives/1077919|url-status=dead}}{{Cite news|url=http://tenasia.hankyung.com/archives/1102324|title={{!}} 이달의 소녀, 4번째 주인공 여진.. 15세 발랄 상큼소녀텐아시아|date=2017-01-04|work=텐아시아|access-date=2018-08-16|language=ko-KR|archive-date=July 28, 2017|archive-url=https://web.archive.org/web/20170728204649/http://tenasia.hankyung.com/archives/1102324|url-status=dead}}{{Cite news|url=http://tenasia.hankyung.com/archives/1134800|title={{!}} 이달의 소녀, 5번째 멤버 '비비'+첫 유닛 티저 공개 '기대감UP'텐아시아|date=2017-02-13|work=텐아시아|access-date=2018-08-16|language=ko-KR|archive-date=July 28, 2017|archive-url=https://web.archive.org/web/20170728204653/http://tenasia.hankyung.com/archives/1134800|url-status=dead}} Then, between April and July 2017, members ViVi, Kim Lip, JinSoul and Choerry were officially introduced.{{Cite news|url=http://tenasia.hankyung.com/archives/1178474|title={{!}} 이달의 소녀 비비, 5번째 솔로 앨범 주인공 낙점...MV 촬영지 '궁금증 UP'텐아시아|date=2017-04-05|work=텐아시아|access-date=2018-08-16|language=ko-KR|archive-date=September 4, 2019|archive-url=https://web.archive.org/web/20190904115811/http://tenasia.hankyung.com/archives/1178474|url-status=dead}}{{Cite news|url=http://tenasia.hankyung.com/archives/1208459|title={{!}} 이달의 소녀, 여섯 번째 멤버 김립 공개 "NEW 빌드업 소녀"텐아시아|date=2017-05-15|work=텐아시아|access-date=2018-08-16|language=ko-KR|archive-date=September 4, 2019|archive-url=https://web.archive.org/web/20190904115811/http://tenasia.hankyung.com/archives/1208459|url-status=dead}}{{Cite news|url=http://tenasia.hankyung.com/archives/1231693|title={{!}} 이달의 소녀, 7번째 멤버 진솔 공개...'男心홀릭' 여신 비주얼텐아시아|date=2017-06-13|work=텐아시아|access-date=2018-08-16|language=ko-KR|archive-date=June 13, 2017|archive-url=https://web.archive.org/web/20170613061350/http://tenasia.hankyung.com/archives/1231693|url-status=dead}}{{Cite news|url=http://tenasia.hankyung.com/archives/1253167|title={{!}} 이달의 소녀, 8번째 멤버 최리 공개...우아한 걸크러시텐아시아|date=2017-07-12|work=텐아시아|access-date=2018-08-16|language=ko-KR|archive-date=July 28, 2017|archive-url=https://web.archive.org/web/20170728120400/http://tenasia.hankyung.com/archives/1253167|url-status=dead}} Finally, between November 2017 and March 2018, members Yves, Chuu, Go Won and HyeJu (formerly Olivia Hye) were officially introduced.{{Cite news|url=http://tenasia.hankyung.com/archives/1357225|title={{!}} 이달의 소녀 이브, 방탄소년단 이어 美아이튠즈 TOP4 '기염'텐아시아|date=2017-11-30|work=텐아시아|access-date=2018-08-16|language=ko-KR|archive-date=February 20, 2020|archive-url=https://web.archive.org/web/20200220032405/http://tenasia.hankyung.com/archives/1357225|url-status=dead}}{{Cite news|url=http://tenasia.hankyung.com/archives/1381359|title={{!}} 이달의 소녀 열 번째 멤버 '츄', '하트 어택' 음원+뮤비 공개텐아시아|date=2017-12-28|work=텐아시아|access-date=2018-08-16|language=ko-KR|archive-date=December 29, 2017|archive-url=https://web.archive.org/web/20171229052244/http://tenasia.hankyung.com/archives/1381359|url-status=dead}}{{Cite news|url=http://tenasia.hankyung.com/archives/1412319|title={{!}} 이달의 소녀 11번째 멤버 고원, 솔로 싱글 오늘(30일) 정오 공개텐아시아|date=2018-01-30|work=텐아시아|access-date=2018-08-16|language=ko-KR|archive-date=September 4, 2019|archive-url=https://web.archive.org/web/20190904115815/http://tenasia.hankyung.com/archives/1412319|url-status=dead}}

On August 15, Blockberry published the official tracklist for the album and set the release date to August 20, 2018, 6 P.M. KST.{{Cite news|url=https://twitter.com/loonatheworld/status/1029744562464387072|title=이달의 소녀(LOOΠΔ) on Twitter|work=Twitter|access-date=2018-08-16|language=en}}

Blockberry Creative released a 26-second teaser titled "X X" on October 14, 2018, on Loona's official YouTube channel, which featured events from the "Hi High" music video in reverse.{{Cite web|url=https://www.youtube.com/watch?v=9ruj7AG0odU|title=[Teaser] 이달의 소녀 (LOONA) "X X"|website=YouTube|date=October 14, 2018 }} Another teaser was released on January 1, 2019, following more teasers released once every week of January.

A repackaged version of the album named X X was released on February 19, 2019, with "Butterfly" as the lead promotional single along with five other tracks added to the original track list.{{Cite web|url=https://www.youtube.com/watch?v=XEOCbFJjRw0|title=[MV] 이달의 소녀 (LOONA) "Butterfly"|website=YouTube|date=February 19, 2019 }} It was distributed by Kakao M in both digital and physical formats.{{Cite web|url=https://www.melon.com/album/detail.htm?albumId=10252794|title=[EP] [X X] 이달의 소녀|trans-title=[EP] [X X] LOOΠΔ|website=Melon|access-date=2019-02-21|language=ko|publisher=Kakao Corporation}}

"favOriTe" was released as a pre-debut single on August 7.{{Cite magazine|url=https://www.billboard.com/articles/columns/k-town/8469128/loona-favorite-music-video-first-single|title=K-Pop Girl Group Loona Releases First Single as Full Act: Watch 'favOriTe' Music Video|magazine=Billboard|access-date=2018-08-16}} "Hi High" was released as the lead single in conjunction with the EP on August 20. On August 17, a music video teaser was released.{{Cite magazine|url=https://www.billboard.com/articles/columns/k-town/8470693/loona-announces-hi-high-teaser-video|title=Loona Announces First Formal Single 'Hi High': Watch a Teaser|magazine=Billboard|access-date=2018-08-19}}

"Butterfly" was released as the lead single for the repackaged version of the EP on February 19, 2019.{{Cite magazine|url=https://www.billboard.com/articles/columns/k-town/8499147/loona-butterfly-music-video-watch|title=LOONA Share Inspiring 'Butterfly' Music Video: Watch|last=Herman|first=Tamar|date=February 19, 2019|magazine=Billboard}}

The album opens with a dreamy instrumental intro titled "+ +" that features smooth synthesizers, artificial summery guitar licks, digital finger snappings, the continuous change of the melodies and the layering of whispered vocals and manipulated whistle samples. It is followed by the effervescent lead single "Hi High", which is a bright electropop, bubblegum pop and experimental pop song with bouncing beats, a vivacious tempo, explosive vocals, quirky beats and synths. "Favorite" (stylised as favOriTe) is a hip-hop inspired dance-pop and alternative R&B song incorporating a more charismatic and boisterous sound. Adding that with prominent trills and trumpeting synths propelling the melody to its dynamic chorus, plus a woozy bridge later in the song, the song condenses the group's innovative nature into a boisterous tune. The fourth track "Heat" (stylised as "{{Lang|ko|열기}} (9)") is a pop and R&B track with elements of moombahton and tropical house and features a more slower, mature and brassy sound with an EDM drop. "Perfect Love" is a synth-pop song that was described as the most "commercial sounding" song on the album by Blockberry Creative. The final track, "Stylish" is a pop song.{{Cite web|url=https://www.laut.de/LOONA/Alben/--110177|title=Eine Peak für K-Pop: So kommerziell, dass es schon wieder Gegenkultur ist.|last=Yannik|first=Gölz|date=August 18, 2018|website=Laut.de|access-date=January 21, 2021}}{{cite web|url=https://www.nme.com/features/music-features/loona-every-song-ranked-best-top-3263874|title=Every LOONA song ranked in order of greatness|last=Daly|first=Rhian|date=July 7, 2022|access-date=July 7, 2022|website=NME}}

[+ +] debuted at number 2 on the Gaon Album Chart, at number 4 on the US World Albums and US Heatseekers Albums and at number 20 on the US Independent Albums.

The EP was the 6th best-selling album of August 2018, with 41,583 physical copies sold.{{Cite web|url=http://gaonchart.co.kr/main/section/chart/album.gaon?nationGbn=T&serviceGbn=&targetTime=08&hitYear=2018&termGbn=month|title=August 2018 - Album Chart|website=Gaon Chart|access-date=2018-09-06}} On September, the EP sold 5,903 additional copies for a total of 47,486 copies sold.{{Cite web|url=http://gaonchart.co.kr/main/section/chart/album.gaon?nationGbn=T&serviceGbn=&targetTime=09&hitYear=2018&termGbn=month|title=September 2018 - Album Chart|website=Gaon Chart|access-date=2018-10-16}} On October 15, it was reported that the album was the best-selling album by a girl group that debuted in 2018, after surpassing 50,000 copies sold.{{Cite news|url=https://entertain.naver.com/now/read?oid=311&aid=0000908861|title='Global Rookie' Loona's debut album sells 50K copies ... additional production will proceed|access-date=2018-10-16|language=ko}} The album sold 52,823 physical copies in 2018, being the second best-selling album by a girl group that debuted in 2018 after Iz*One's Color*Iz, 15th best-selling album by a girl group and 80th best-selling album overall in 2018.{{Cite web|url=http://gaonchart.co.kr/|title=2018 - Gaon Album Chart|website=Gaon Chart|access-date=2019-01-13}}

[X X] debuted at number 4 on the US World Albums Chart with 2,000 downloads sold and 721,000 on-demand audio streams for its songs.{{Cite magazine|url=https://www.billboard.com/charts/world-albums|title=World Music: Top World Albums Chart|magazine=Billboard|access-date=2019-02-27}}{{Cite magazine|url=https://www.billboard.com/articles/columns/k-town/8500816/loona-doubles-best-us-sales-week-xx|title=LOONA Doubles Their Best U.S. Sales Week With Second Album Release|magazine=Billboard|access-date=2019-03-05}} It also debuted at number 8 on US Heatseekers Albums and at number 22 on the US Independent Albums.{{Cite magazine|url=https://www.billboard.com/charts/heatseekers-albums|title=Heatseekers Albums: Up and Coming Musicians Chart|magazine=Billboard|access-date=2019-02-27}}{{Cite magazine|url=https://www.billboard.com/charts/independent-albums|title=Independent Albums|magazine=Billboard|access-date=2019-02-27}} The EP also debuted at number 10 on the Gaon Album Chart and peaked at number 3 in its second week.{{Cite web|url=http://gaonchart.co.kr/|title=The 8th Week of 2019 - Gaon Album Chart|website=Gaon Chart|access-date=2019-03-07}}{{Cite web|url=http://gaonchart.co.kr/|title=The 9th Week of 2019 - Gaon Album Chart|website=Gaon Chart|access-date=2019-03-07}}

The EP was the 9th best-selling album of February 2019, with 26,563 physical copies sold.{{Cite web|url=http://gaonchart.co.kr/|title=February 2019 - Gaon Album Chart|website=Gaon Chart|access-date=2019-03-07}} It was also the 17th best-selling album of March 2019, with 15,874 additional copies sold.{{Cite web|url=http://gaonchart.co.kr/|title=March 2019 - Gaon Album Chart|website=Gaon Chart|access-date=2019-04-11}} It also charted at number 61 for the month of April 2019 with 2,837 additional copies sold, for a total of 45,274 copies sold.{{Cite web|url=http://gaonchart.co.kr/|title=Gaon Album Chart - April 2019|website=Gaon Chart|access-date=2019-05-12}}

{{Track listing

| extra_column = Arrangement

| title1 = + +

| lyrics1 =

| music1 = {{hlist|Hwang Hyun|NOPARI|GDLO (MonoTree)|Artronic Waves|Billie Jean (BADD)|SlyBerry (BADD)}}

| extra1 = Hwang Hyun (MonoTree)

| length1 = 0:58

| title2 = Hi High

| lyrics2 = {{hlist|Jaden Jeong|GDLO|Hwang Hyun (MonoTree)}}

| music2 = {{hlist|Hwang Hyun|GDLO (MonoTree)|Mayu Wakusaka}}

| extra2 = {{hlist|Hwang Hyun|GDLO (MonoTree)}}

| length2 = 3:16

| title3 = Favorite

| lyrics3 = {{hlist|Kim Su-jung|Jaden Jeong}}

| music3 = {{hlist|Billie Jean (BADD)|Sophia Pae|SlyBerry|Kim Jin-hyeong (BADD)}}

| extra3 = {{hlist|Billie Jean (BADD)|SlyBerry|Kim Jin-hyeong (BADD)}}

| length3 = 3:14

| title4 = {{lang|ko|열기}} (9)

| lyrics4 = {{hlist|Seo Jung-Ah}}

| music4 = {{hlist|Brooke Toia||Daniel Caesar|Ludwig Lindell|Adelen Steen}}

| extra4 = {{hlist|Brooke Toia||Daniel Caesar|Ludwig Lindell|Adelen Steen}}

| length4 = 3:30

| title5 = Perfect Love

| lyrics5 = Le'mon

| music5 = {{hlist|Yun Jong Sung (MonoTree)|Le'mon}}

| extra5 = Yun Jong Sung (MonoTree)

| length5 = 3:42

| title6 = Stylish

| lyrics6 = {{hlist|Iggy (OREO)|Lambo (OREO)}}

| music6 = {{hlist|Mike Macdermid|Emma O'Gorman|Marc Lian|David Brant|Iggy (OREO)}}

| extra6 =

| length6 = 3:29

| total_length = 18:09

| title9 =

| length10 =

| title10 =

| length9 =

| all_writing =

| length8 =

| title8 =

| length7 =

| title7 =

| headline = [+ +]

}}

{{Track listing

| headline = [X X]

| extra_column = Arrangement

| title1 = X X

| lyrics1 =

| music1 = {{hlist|Kim Jinhyeong (BADD)|SlyBerry (BADD)|Billie Jean (BADD)}}

| extra1 = {{hlist|Kim Jinhyeong (BADD)|SlyBerry (BADD)|Billie Jean (BADD)}}

| length1 = 0:48

| title2 = Butterfly

| lyrics2 = {{hlist|G-high (MonoTree)|Jaden Jeong}}

| music2 = G-high (MonoTree)

| extra2 = G-high (MonoTree)

| length2 = 3:57

| title3 = Satellite ({{lang|ko|위성}})

| lyrics3 = {{hlist|ZNEE (153/Joombas)|Jaden Jeong}}

| music3 = {{hlist|David Amber|Ashley Alisha (153/Joombas)}}

| extra3 = David Amber

| length3 = 3:09

| title4 = Curiosity

| lyrics4 = Park Jiyeon (MonoTree)

| music4 = {{hlist|G-high (MonoTree)|Ashley Alisha (153/Joombas)}}

| extra4 = G-high (MonoTree)

| length4 = 3:09

| title5 = Colors ({{lang|ko|색깔}})

| lyrics5 = {{hlist|Dally|Jaden Jeong}}

| music5 = {{hlist|Billie Jean (BADD)|Hiekee|Kim Jinhyeong (BADD)}}

| extra5 = Billie Jean

| length5 = 3:15

| title6 = Where You At

| lyrics6 = Park Jiyeon (MonoTree)

| music6 = {{hlist|Daniel Kim|Mekay|Ylva Dimberg}}

| extra6 = Daniel Kim

| length6 = 3:27

| title7 = Stylish

| lyrics7 = {{hlist|Iggy (OREO)|Lambo (OREO)}}

| music7 = {{hlist|Mike Macdermid|Emma O'Gorman|Marc Lian|David Brant|Iggy (OREO)}}

| extra7 =

| length7 = 3:29

| title8 = Perfect Love

| lyrics8 = Le'mon

| music8 = {{hlist|Yun Jong Sung (MonoTree)|Le'mon}}

| extra8 = Yun Jong Sung (MonoTree)

| length8 = 3:42

| title9 = {{lang|ko|열기}} (Heat)

| lyrics9 = {{hlist|Seo Jung-Ah}}

| music9 = {{hlist|Brooke Toia||Daniel Caesar|Ludwig Lindell|Adelen Steen}}

| extra9 = {{hlist|Brooke Toia||Daniel Caesar|Ludwig Lindell|Adelen Steen}}

| length9 = 3:30

| title10 = favOriTe

| lyrics10 = {{hlist|Kim Su-jung|Jaden Jeong}}

| music10 = {{hlist|Billie Jean (BADD)|Sophia Pae|SlyBerry|Kim Jin-hyeong (BADD)}}

| extra10 = {{hlist|Billie Jean (BADD)|SlyBerry|Kim Jin-hyeong (BADD)}}

| length10 = 3:14

| title11 = Hi High

| lyrics11 = {{hlist|Jaden Jeong|GDLO|Hwang Hyun (MonoTree)}}

| music11 = {{hlist|Hwang Hyun|GDLO (MonoTree)|Mayu Wakusaka}}

| extra11 = {{hlist|Hwang Hyun|GDLO (MonoTree)}}

| length11 = 3:16

| title12 = + +

| lyrics12 =

| music12 = {{hlist|Hwang Hyun|NOPARI|GDLO (MonoTree)|Artronic Waves|Billie Jean (BADD)|SlyBerry (BADD)}}

| extra12 = Hwang Hyun (MonoTree)

| length12 = 0:58

| total_length = 35:59

| all_writing =

}}

{{col-begin}}

{{col-2}}

{{col-2}}

{{col-end}}

{{Certification Table Top}}

{{Certification Table Entry|region=South Korea|nocert=yes|salesamount= 68,316|salesref={{cite web|url=http://gaonchart.co.kr/main/section/chart/album.gaon?nationGbn=T&serviceGbn=&targetTime=2018&hitYear=2018&termGbn=year|title=2018년 Album Chart|trans-title=2018 Album Chart|website=Gaon Music Chart}}}}

{{Certification Table Entry|region=United States|nocert=yes|salesamount=1,000|salesref={{cite magazine|title=LOONA's Long-Awaited Debut Scores Top 5 Entries on World Albums & Song Sales Charts|url=http://www.billboard.com/articles/columns/k-town/8472901/loona-debut-album-song-world-charts|magazine=Billboard|accessdate=August 30, 2018}}}}

|}

{{Reflist}}

{{Loona}}

{{Authority control}}

{{DEFAULTSORT:+ +}}

Category:Loona (group) EPs

Category:2018 debut EPs

Category:Korean-language EPs

Category:2010s Korean-language albums

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