Pada tanggal 7 Oktober 2015, JYP Entertainment meluncurkan situs web resmi grupTwice dan mengumumkan melalui [[Jejaringjejaring sosial|SNS]] bahwa mereka akan debut dengan album mini albumbertajuk ''The Story Begins'' dan lagu utama "Like OOH-AHH". Lagu ini didefinisikan sebagai lagu dance 'color pop' dengan elemen dari [[HipLike hop|hipOoh-hop]], [[rock]], dan [[R&BAhh]]".<ref>{{cite web|last1=Lee|first1=Nancy|title=[Video] Twice Enters Girl Group Competition with ′Like OOH-AHH′|url=http://mwave.interest.me/enewsworld/en/article/9896798996/videotwices-twicetzuyu-entersand-girlmina-grouptalk-competitionabout-withadjusting-liketo-oohlife-ahh|website=Mwave|publisher=CJ E&M Corp.|accessdate=20 October 2015}}</ref> Para produser terdiri dari Black Eyed Pilseung, yang telah dikenal dengan memproduksi lagu [[Miss A]], "Only You."<ref>{{cite webin-korea|title=Twice′s Tzuyu and Mina Talk About Adjusting to Life in Korea|url=http://mwave.interest.me/enewsworld/en/article/98996/twices-tzuyu-and-mina-talk-about-adjusting-to-life-in-korea|publisher=Newsen|accessdateaccess-date=20 OctoberOktober 2015}}</ref><ref>{{cite web|title=Twice′s Momo and Tzuyu are Thankful for Opportunity to Debut|url=http://mwave.interest.me/enewsworld/en/article/98995/twices-momo-and-tzuyu-are-thankful-for-opportunity-to-debut|title=Twice′s Momo and Tzuyu are Thankful for Opportunity to Debut|publisher=CJ E&M enewsWorld|accessdateaccess-date=20 OctoberOktober 2015}}</ref><ref>{{cite web|last1last=Park|first1first=Su-jeong|url=http://tenasia.hankyung.com/topic/article/2015100772894|script-title=ko:JYP 신인 걸그룹 트와이스, 10월 20일 데뷔 확정|url=http://tenasia.hankyung.com/archives/707178|website=TenAsia|publisherlanguage=Koreako|date=7 EntertainmentOktober Media2015|accessdateaccess-date=627 OctoberJuni 20152020}}</ref><ref>{{cite web|last1last=Hong|first1first=Se-yeong|url=http://sports.donga.com/3/all/20151007/74037758/1|script-title=ko:JYP 측 "신인 걸그룹 트와이스 오는 20일 전격 데뷔" [공식입장]|url=http://sports.donga.com/3/all/20151007/74037758/1|website=Sports Donga|publisherlanguage=Sportsko|date=7 DongaOktober 2015|accessdateaccess-date=627 OctoberJuni 20152020}}</ref><ref>{{cite web|last1last=Choi|first1first=Hyeon-jeong|url=http://n.news.naver.com/entertain/article/382/0000412423|script-title=ko:트와이스, 단체 이미지 공개 ‘떨림까지 아름다운 걸그룹’|urlwebsite=http://m.entertain.naver.com/read?oid=382&aid=0000412423Sports Donga|websitevia=[[Naver]]|publisherlanguage=Naver Corp.ko|accessdatedate=89 OctoberOktober 2015|access-date=27 Juni 2020}}</ref>▼
''Teaser'' yang menampilkan masing-masing anggota untuk musik video mereka dirilis dari tanggal 12 sampai 14 Oktober 2015.<ref>{{cite web|last=Lee|first=Nancy|url=http://mwave.interest.me/enewsworld/en/article/98686/video-twice-kicks-off-teasers-with-nayeon-momo-and-mina|title=[Video] Twice Kicks Off Teasers with Nayeon, Momo and Mina |last=Lee |first=Nancy |website=enewsWorld|date=12 October 2015|accessdateaccess-date=29 November 2015}}</ref> Pada 20 Oktober, musik video untuk lagu utama dirilis di Naver V App.<ref>{{cite web|last1=Kim|first1=Myeong-seon|title=트와이스, 평균나이 19세·최강 비주얼 그룹의 탄생|url=http://www.tvreport.co.kr/?c=news&m=newsview&idx=807343|website=TV Report|publisher=TV Report|accessdate=19 October 2015}}</ref>▼
▲Pada 7 Oktober 2015, JYP Entertainment meluncurkan situs resmi grup dan mengumumkan melalui [[Jejaring sosial|SNS]] bahwa mereka akan debut dengan mini album ''The Story Begins'' dan lagu utama "Like OOH-AHH". Lagu ini didefinisikan sebagai lagu dance 'color pop' dengan elemen dari [[Hip hop|hip-hop]], [[rock]], dan [[R&B]].<ref>{{cite web|last1=Lee|first1=Nancy|title=[Video] Twice Enters Girl Group Competition with ′Like OOH-AHH′|url=http://mwave.interest.me/enewsworld/en/article/98967/video-twice-enters-girl-group-competition-with-like-ooh-ahh|website=Mwave|publisher=CJ E&M Corp.|accessdate=20 October 2015}}</ref> Para produser terdiri dari Black Eyed Pilseung, yang telah dikenal dengan memproduksi lagu [[Miss A]], "Only You."<ref>{{cite web|title=Twice′s Tzuyu and Mina Talk About Adjusting to Life in Korea|url=http://mwave.interest.me/enewsworld/en/article/98996/twices-tzuyu-and-mina-talk-about-adjusting-to-life-in-korea|publisher=Newsen|accessdate=20 October 2015}}</ref><ref>{{cite web|title=Twice′s Momo and Tzuyu are Thankful for Opportunity to Debut|url=http://mwave.interest.me/enewsworld/en/article/98995/twices-momo-and-tzuyu-are-thankful-for-opportunity-to-debut|publisher=CJ E&M enewsWorld|accessdate=20 October 2015}}</ref><ref>{{cite web|last1=Park|first1=Su-jeong|title=JYP 신인 걸그룹 트와이스, 10월 20일 데뷔 확정|url=http://tenasia.hankyung.com/archives/707178|website=TenAsia|publisher=Korea Entertainment Media|accessdate=6 October 2015}}</ref><ref>{{cite web|last1=Hong|first1=Se-yeong|title=JYP 측 "신인 걸그룹 트와이스 오는 20일 전격 데뷔" [공식입장]|url=http://sports.donga.com/3/all/20151007/74037758/1|website=Sports Donga|publisher=Sports Donga|accessdate=6 October 2015}}</ref><ref>{{cite web|last1=Choi|first1=Hyeon-jeong|title=트와이스, 단체 이미지 공개 ‘떨림까지 아름다운 걸그룹’|url=http://m.entertain.naver.com/read?oid=382&aid=0000412423|website=Naver|publisher=Naver Corp.|accessdate=8 October 2015}}</ref>
▲''Teaser'' yang menampilkan masing-masing anggota untuk musik video mereka dirilis dari tanggal 12 sampai 14 Oktober 2015.<ref>{{cite web |url=http://mwave.interest.me/enewsworld/en/article/98686/video-twice-kicks-off-teasers-with-nayeon-momo-and-mina |title=[Video] Twice Kicks Off Teasers with Nayeon, Momo and Mina |last=Lee |first=Nancy |website=enewsWorld |date=12 October 2015 |accessdate=29 November 2015}}</ref> Pada 20 Oktober, musik video untuk lagu utama dirilis di Naver V App.<ref>{{cite web|last1=Kim|first1=Myeong-seon|title=트와이스, 평균나이 19세·최강 비주얼 그룹의 탄생|url=http://www.tvreport.co.kr/?c=news&m=newsview&idx=807343|website=TV Report|publisher=TV Report|accessdate=19 October 2015}}</ref>
Lima bulan setelah perilisan, musik video untuk "Like OOH-AHH" mencapai 50 juta penonton dan melewati [[2NE1]] dengan "[[Fire (lagu 2NE1)|Fire]]", sebagai musik video yang paling banyak ditonton di antara seluruh grup K-pop yang melangsungkan debut.<ref>{{Cite news|url=http://www.hankookilbo.com/v/db9aad0a768e82ed7c1b4b3f86b829fc|title=JYP 트와이스, 데뷔곡 MV 천만뷰 돌파|last=Shim|first=Jae-geol|date=14 November 2015|access-date=23 November 2015|language=Korean}}</ref><ref>{{cite web|last1=Kim|first1=Gyeong-min|title=트와이스 '우아하게', 데뷔곡 단일 MV 유튜브 최다 조회수 기록|url=http://www.xportsnews.com/jenter/?ac=article_view&entry_id=699415|website=XSportsNews|publisher=XSPORTSMEDIA|accessdate=31 March 2016}}</ref>
