Members of idol group INFINITE are hard at work, preparing for their upcoming encore concert performance.

On April 1st, 10,000 fans will be flocking to Seoul Olympic Park to attend INFINITE's 'Second Invasion-Evolution' concert, the encore performance to their first concerts which took place this past February.

With only a few days remaining, the boys are rehearsing day and night without rest. Member Hoya who turned 22 on March 28th was more concerned with perfecting their stage performance that he postponed celebrating his birthday to focus on rehearsals.

INFINITE has sold out both this upcoming 'Second Invasion-Evolution' concert as well as their first performances held at the Handball Stadium. Though it is an encore performance, the boys have completely reorganized the format, and all of the members' individual performances will be different as well. Furthermore, the boys will also be revealing songs from their new album scheduled to drop this May.

In addition, YouTube will be streaming five of their song performances from the 'Second Invasion-Evoluion' concert live and various other clips of the boys will also be revealed.

Source & Image: Newsen via Nate