SM Entertainment's new girl group Red Velvet topped music charts with their debut.

On August 4, Red Velvet's debut song "Happiness" was released through online music stores. The song topped Olleh Music, Genie, and Bugs upon release.

Red Velvet's debut song "Happiness" is an urban Euro-pop genre song carrying a message of loving oneself through the little happiness found in life.

Red Velvet performed their debut stage last week through TV music programs, capturing eyes with their rhythmical and energetic performance.

Meanwhile, Red Velvet will continue with promotions.