Girl group Wonder Girls and famous hip-hop musician Akon held their first performance together.

On July 21 and 22, Wonder Girls and Akon performed the song, "Like Money," for the first time at the 'Green Groove Festival'.

The Wonder Girls sang many of their hit songs including, "Like This", "Be My Baby", "Tell Me" and "Nobody."

Akon performed his hit songs such as "Lonely" and "Right Now, Na Na Na." He even at one point put himself in a transparent balloon costume and jumped into the crowd, making him an 'Akon balloon.'

Akon commented, "I have close friends in Korea," and called Wonder Girls to the stage. They then performed the song "Like Money" together for the first time. Wonder Girls powerful dance moves and Akon's stage presence created a fresh and interesting performance.

The 'Green Groove Festival' had 43,000 people attend, making it a huge success. This is the first environmental-friendly festival held in Korea.