The 'Produce 101' boys will soon be matched to their concept songs: the Nu Disco song "Show Time", the Future EDM song "Open", the Synth Pop/Funk song "I Know You Know", the Deep House song "Never", and the Hip Hop song "Oh Little Girl". Now, it's been revealed who the producers behind the songs were.

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Kiggen (of Phantom) and ASSBRASS wrote "Oh Little Girl". This team is made of Brand New Music producers. BNM has 4 trainees in running - Lee Dae Hwi, Park Woo Jin, Kim Dong Hyeon, and Lim Young Min. 

Producer Shin Hyuk, who composed EXO's "Growl" as well as Justin Bieber's "One Less Lonely Girl", wrote "I Know You Know". In terms of name value, he is the most well-known producer in the group.

Devine Channel, who worked on BTS's "Fire" as well as VIXX's "Shangri-La", is also one of the producers, and has also worked with SM Entertainment. Veethoven, Oh Sung Hwan, ASHTRAY, and KINGMAKER has worked with N-Sonic and HIGHTEEN. 

Which song is your favorite?