빅스 – Y.Bird From Jellyfish Island With VIXX & Okdal 
Release Date: 2013.10.11 
Genre: Dance Pop 
Language: Korean 
Bit Rate: MP3-320kbps 

Track List (individual download tracks) :
01. 여자는 왜 (feat. 옥상달빛) 
02. I’m A Boy, You’re A Girl (feat. 옥상달빛) 
03. 여자는 왜 (inst.)

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SOURCE :  k2nblog