Red Velvet is a South Korean girl group which originally included of Irene, Wendy Seulgi, and Joy, and they debuted together with the song: Happiness! In 2015, however, a new member, who's name is Yeri, was added to the line up. RBB is known as Bad Boy's sister song, however, this song kept with the 'red' theme. It has garnered seventy-six million views. This is number thirteen out of twenty! This series will be about all of their title tracks, and this is not an ad, but just to appreciate one of the hardest working girl groups.