On April 7, 2017, Big Hit Entertainment released the 1st digital single called "Tag Me" for JGT's third unit, JGT Rosy.

Tracklist:
1. Tag Me

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JGT Rosy - Tag Me MV

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JGT Rosy - Tag Me Choreography MV

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JGT Rosy - Tag Me Dance Practice

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JGT Rosy - Tag Me Debut Stage

Lia as Monday
Lianne as Jihan
Eunseol as Jaehee
Miso as Soeun
Soeun as Zoa
Jinny as Jiyoon
Lily as Soojin