Group Block B released their "Jackpot" music video and made their comeback.

On April 15, Block B released their new music video on YouTube featuring actress Kim Se Ron.

This song features an electro-swing sound that gained much attention from fans.

The music video concept shows a present-day 'Alice in Wonderland' theme.

The members hairstyles also caught many people's attention in the video with their bright colors.

They will release the song, "Jackpot" tomorrow and begin their solo concert tour in May.