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. Happiness garnered one-hundred and eleven million view (since of April of 2023). It speaks about self-confidence and empowerment. This is number one out of twenty! This series will be about allof their title tracks, and this is not an ad, but just to appreciate one of the hardest working girl groups.