TWICE「I want you back」Line Distribution

Who sings the most in "I want you back" from Twice? And who's the poor little one that sings the least?? SOCIAL MEDIA: ✨ TWITTER: twitter.com/watasy_wahyo 「@watasy_wahyo」 _____________________________ Intro Song: One Step, Two Steps 「Oh my Girl」 Video Song: I want you back「Jackson 5」 Outro Song: DKDK 「fromis_9」