The 'Hallyu Music Festival 2012' was held in Tokyo on September 17.

Idol group A-JAX performed their debut song, "ONE 4 U" in Japanese. They also performed another song called, "Never Let Go."

The group commented, "This concert is like a charity concert for those who were affected by the earthquake."

Other groups such as Dalmatian and B1A4 also performed on stage as well.

The money that they earn from this concert will be given to 'GFSC (Good Friends Save the Children)'.