Performance Credits
Barstaz (Block B Unit) Primary ArtistBastarz Primary Artist
Block B Primary Artist
Block B Bastarz Primary Artist
Incredible Featured Artist
Technical Credits
Xepy ComposerMartin Mulholland Composer
Incredivle Composer
Erik Lewander Composer
Esna Composer
Zico Composer
P.O. Composer
GroovyRoom Composer
Poptime Composer
Henri Composer
Yongbae Composer
Sooho Lim Composer
Mr Success Composer
![WHY.. [MOODY ver.] [Barnes & Noble Exclusive]](http://prodimage.images-bn.com/pimages/0196922538575_p0_v2_s90x140.jpg "WHY.. [MOODY ver.] [Barnes & Noble Exclusive]")
![Why... [Compact Letter Version]](http://prodimage.images-bn.com/pimages/0196922538582_p0_v3_s90x140.jpg "Why... [Compact Letter Version]")