和朴春一起度过2ne1全盛期的制作人Kush亲自参与制作、作曲、作词、指导的《Do Re Mi Fa Sol》是一首一听就会留下深刻印象的旋律，赋有魅力的歌曲。将“最简单而单纯，却又复杂而难的就是爱情”这一理念用比喻的方式融入了音乐之中。清淡的吉他演奏上，可爱的歌词和旋律，还有说唱歌手CHANGMO的参与，增加了听歌的乐趣。 도레미파솔 (Do Re Mi Fa Sol) Executive Producer: Scotty Kim 작곡: KUSH, 서원진, VVN, 창모 (CHANGMO) 작사: KUSH, VVN, 창모 (CHANGMO) 편곡: 서원진 RECORDING STUDIO : PRVTC RECORDING DIRECTOR : KUSH RECORDING ENGINEER : 이평욱 MIXING ENGINEER : staytuned MASTERING ENGINEER : 권남우 @ 821 Sound Mastering BACKGROUND VOCAL : VVN,박봄,창모 Management / 홍성용, 정민영, 김주영, 강진희, 이송연,  PR / HNS HQ MV Still Photography / 장대규, 공경찬 MV Director / 스톤 Creative Director / 헤일로 유 Artwork / february market Art director / kaho @o.h.a.k Designer evelyn @yoonfriendly Make up / 민선 Hair / 지희 Stylist / 정다정