Vocal group SG Wannabe's Kim Jin Ho released a teaser image and shared his thoughts on the group's comeback after a 4-year hiatus.

"During our time away from the stage, we learned many lessons about life. We did our best to express what we learned through our voices," he explained.

"To our fans who opened their hearts to our music and waited for us all these years, thank you. You are the reason we sing," he added.

SG Wannabe will release their comeback album "The Voice" on August 19. They will also start a domestic tour, and the very first concert will be held at Seoul Olympic Hall from October 9 to October 10.