Popular idol group�B2ST will be making a surprise appearance on the next episode of '1 Night, 2 Days' ('1N2D')! On September 18th, KBS's '1N2D' will air an episode called 'Viewer's Trip', which will see performances from�B2ST, Koyote's Shinji and Hyun Chul. These special artists will be rocking the stage with loud and exciting songs in front of an audience of 1,000. The concert is predicted to be an especially thrilling experience, thanks to B2ST's wide popularity amongst female teens and young adults in their 20's. But it'll still be a show that'll be great to watch with the entire family, as a representative of the show shared that the audience members ranged from little kids to senior citizens. Prior to MC Kang Ho Dong's withdrawal from the entertainment industry, 'Viewer's Trip' was comprised of three parts, but has now been extended to four. Stay tuned for more details on the show! Source + Photos: W Star News via Nate