'Happiness' is an energetic urban euro pop genre. The lyrics carry an optimistic message about getting energy from everyday activities and learning to love yourself more. 

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The girl group is comprised of S.M.Rookies' Seulgi, Irene, and Wendy, as well as Joy. Seulgi was brought into the agency back in 2007 through an audition and she's a multi-talented member who can sing, dance, play the guitar, and speak Japanese. Irene was cast by SM in 2009 and she is skilled in singing, rapping, and modern dance. Wendy was brought in in 2012 through 'SM Global Audition' in Canada and she is of course fluent in English and can play the flute, guitar, and saxophone, all in addition to her great vocal talents. 

Joy, who was not previously introduced through S.M.Rookies, also came in through the 'SM Global Audition' in 2012' but in Seoul. She possesses cute visuals and is well rounded in singing and dancing.

Check out the song below if you haven't already!

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