Shinhwa proved their popularity among other stars as more than a dozen idol singers and top musicians showed up at their comeback concert. On March 24 and 25, K-Pop’s longest-running idol group held the “2012 Shinhwa Grand Tour in Seoul ‘The Return,’” marking their return in nearly four years.

During the two-day concert, some of the top K-Pop artists came to see the six-member group. The guest list included DBSK’s Changmin, Girls’ Generation’s Sooyoung and Hyoyeon, 2PM’s Taecyeon and Junho, Wonder Girls’ Yoobin, ex-Baby V.O.X members Shim Eun Jin and Kan Mi Yeon, as well as actress Jung Ryeo Won. Also, veteran signers Insooni and Park Sang Min came to see the show with their daughters.

Insooni tweeted, “I just saw Shinhwa’s concert with my daughter and her friends. The phrase, ‘A fish finds water,’ is supposed to be used for this. I was really impressed by the way they looked so happy and free on the stage. You guys must be on the stage! Welcome back, I’m rooting for you guys.”

2PM’s Taecyeon also wrote on his twitter, “Shinhwa hyung’s concert was really fun. I was jealous about their unified color with the fans. I want to have 2PM’s concert.”

Netizens who came across the photos commented, “Shinhwa’s legendary,” “When’s the encore concert?” and “This is what you call the return of the kings.”