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