July 07, 2012 10:47 PM EDT
Taecyeon uploaded a photo of the concert on the 7th. In th picture are the Wonder Girls members and it seems Taecyeon was there to support Wonder Girls, who share the same management company, JYP.
Internet users reacted saying, "Good Camaraderie" "Cheer them on for me."
The concert, held in Seoul's Jamsil Stadium, is Wonder Girls' first solo concert in 3 years.
Photo Credit: Ok Taec Yeon's Twitter @taeccool
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