Talented rookie duo 15& has successfully held their 'school attack' guerrilla concerts.

Beginning on the afternoon of October 12th, the girls made their first stop at the Chungdam Middle School, followed by Eonnam Middle School at 3PM, Sungil Information High School at 5PM, and Dankook University at 8:40PM. For a total of eight hours, 15& held a surprise concert at each school, performing their debut song "I Dream", their cover of Alicia Keys and Beyonce's "Put It In a Love Song", and even SISTAR's "Ma Boy".

The concerts were hosted by KT's digital music application, 'Genie', and was attended by not only the students who attended the schools, but also the citizens living nearby who heard news of the free concert. The event attracted a total of 5,000 in attendance.

JYP Entertainment stated, "15& demonstrated their capabilities in front of the large sum of people. Please continue to show your support and look forward to the group's activities."

15& will be continuing their promotions of "I Dream" on this week's music programs.

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Here's a couple fancams from the events below: