Kim Hyun Joong has been burning the midnight oil to present the best stage possible for his comeback song, "Lucky Guy". To give fans an idea of what they'll be seeing this week on music programs, he's released a rehearsal video on YouTube! The choreography is dynamic and is guaranteed to make the audience stand up and applaud. We can definitely look forward to seeing another A-class stage from the SS501 star. Check it out below! Tip: becky