Red Velvet's the 5th mini album "RBB" is out! Listen and download on iTunes & Apple Music, Spotify, and Google Play Music http://smarturl.it/RBB [Tracklist] 01 RBB (Really Bad Boy) 02 Butterflies 03 So Good 04 멋있게 (Sassy Me) 05 Taste 06 RBB (Really Bad Boy) (English Ver.) Red Velvet Official http://redvelvet.smtown.com http://www.youtube.com/redvelvet http://www.facebook.com/RedVelvet https://www.instagram.com/redvelvet.smtown https://twitter.com/RVsmtown #RedVelvet #레드벨벳 #RBB #ReallyBadBoy Red Velvet 레드벨벳 'RBB (Really Bad Boy)' MV ℗ SM Entertainment