T-Ara said thank you to 2PM Junsu

2PM's Junsu was caught in the act of singing along to T-ara's Bo Peep Bo Peep during the girl group's performance on Music Core this weekend.

The mysterious voice was revealed when 2PM's Taecyeon and 2AM's Seulong posted messages on their CyWorld pages.

Junsu wrote back to Taecyeon, "Ah, you little loud mouth." To Seulong, he wrote, "Ah, I'm so embarrassed." It was reported that Junsu went to T-ara's dressing room, backstage at Inkigayo today and apologized.

T-ara replied, "Because of Junsu, "Bo Peep Bo Peep" became more known. Even though it was an accident, we are thankful for it."

.