Singer BoA recently revealed that Jung Jae Hyung, Yoo Hee Yeol and herself were all in the same room.

Today, BoA wrote on her Twitter, "Is this the 'Sketchbook' rehearsal? Or the 'You and I' rehearsal?! They're all working so hard. Anyways, this is an interesting scene," and revealed the photo above.

In the picture, Jung Jae Hyung is seen teaching the staff members something while Yoo Hee Yeol is seen looking over their shoulders and watching them work.

On another note, Jung Jae Hyung is the MC for SBS' "You and I" while Yoo Hee Yeol is the MC for KBS' "Yoo Hee Yeol's Sketchbook."

Internet users who saw the picture responded, "Are they having a joint concert?" "I'm gonna explode in curiosity," and "It's fun watching these two MC's."

Photo Credit: BoA's Twitter