Happiness

"Happiness" (Korean: 행복; RR: Haengbok) is the debut single recorded by South Korean girl group Red Velvet. The song was written by Yoo Young-jin, Will Simms, Chad Hugo, Anne Judith Wik, and Chris Holsten, with the production handled by Hugo and Simms. It was released digitally by SM Entertainment on August 4, 2014, in South Korea. The song also marked their first release under the Red Velvet moniker and their first as a quartet, introducing the four members Irene, Seulgi, Wendy, and Joy to th... source: https://en.wikipedia.org/wiki/Happiness_(Red_Velvet_song)