Credits adapted from CD single liner notes.
Locations Recording • JYPE Studios, Seoul, South Korea
Mixing •
Mirrorball Studios, North Hollywood, California ("Candy Pop") • I to I Communications, Tokyo, Japan ("Brand New Girl")
Mastering • Sterling Sound, New York City, New York
Personnel JYP Entertainment staff • Song Ji-eun "Shannen" (JYP Entertainment Japan) – executive producer • Jimmy Jeong (JYP Entertainment) – executive producer • Cho Hae-sung (JYP Entertainment) – executive producer •
J. Y. Park "The Asiansoul" – producer • Jung Kyoung-hee (JYP Entertainment Japan) – administration • Park Nam-yong (JYP Entertainment) – performance director • Kim Hyung-woong (JYP Entertainment) – performance director • Yun Hee-so (JYP Entertainment) – performance director • Na Tae-hoon (JYP Entertainment) – performance director • Yoo Kwang-yeol (JYP Entertainment) – performance director • Kang Da-sol (JYP Entertainment) – performance director • Lee Tae-sub (JYP Entertainment) – recording engineer • Choi Hye-jin (JYP Entertainment) – recording engineer • Eom Se-hee (JYP Entertainment) – recording engineer • Lim Hong-jin (JYP Entertainment) – recording engineer • Jang Han-soo (JYP Entertainment) – recording engineer • Lee Jeong-yun "Lia" (JYP Publishing) – publishing • Kim Min-ji (JYP Publishing) – publishing • Shin Da-ye (JYP Publishing) – publishing • Cho Hyun-woo (JYP Publishing) – publishing
Warner Music Japan staff • Kaz Kobayashi – executive producer • Hayato Kajino – supervisor • Rie Sawaoka – supervisor
Japanese recording staff • Goei Ito (Obelisk) – music director • Yu-ki Kokubo (Obelisk) – recording director • Satoshi Sasamoto – Pro Tools operation
Design staff • Toshiyuki Suzuki (United Lounge Tokyo) – art direction • Yasuhiro Uaeda (United Lounge Tokyo) – design • Tommy – photography • Masaaki Mitsuzono – jacket photo style director • Choi Hee-sun (F. Choi) - music video style director • Lim Ji-hyun (F. Choi) - music video style director • F. Choi - music video style director • Lee Jin-young (F. Choi) - music video assistant stylist • Heo Su-yeon (F. Choi) - music video assistant stylist • Jung Nan-young (Lulu Hair Makeup Studio) – hair director • Choi Ji-young (Lulu Hair Makeup Studio) – hair director • Son Eun-hee (Lulu Hair Makeup Studio) – hair director • Jo Sang-ki (Lulu Hair Makeup Studio) – makeup director • Jeon Dallae (Lulu Hair Makeup Studio) – makeup director • Zia (Lulu Hair Makeup Studio) – makeup director • Won Jung-yo – makeup director • Choi Su-ji – assistant makeup director
Movie staff • Kim Young-jo (Naive Production) – music video director • Yoo Seung-woo (Naive Production) – music video director • Takahiko Kyōgoku – music video animation director • Hiroyuki Katō (
OLM Team Kato) – music video animation producer • Han Gui-taek – music video making and jacket shooting making movie director • Yu Yamaguchi (Warner Music Mastering) – DVD authoring
Other personnel • Min Lee "collapsedone" – all instruments and computer programming (on "Candy Pop") • Na.Zu.Na – all instruments (on "Brand New Girl") •
Twice – background vocals • Ikuko Tsutsumi – background vocals • Mayu Wakisaka – background vocals and vocal recording director (on "Candy Pop") • Tony Maserati – mixing engineer (on "Candy Pop") • Naoki Yamada – mixing engineer (on "Brand New Girl") • Ted Jensen at Sterling Sound – mastering engineer ==Charts==