Akdong Musician (Korean: 악동뮤지션, also known as AKMU) is a South Korean music duo under YG Entertainment, consisting of siblings Lee Chanhyuk and Lee Suhyun. They won the second installment of the K-pop Star series. Songs from the group's 2014 debut album Play have more than 6.1 million total downloads.
Their album Play from 2014 is one of the best pop albums I've heard in years, and easily the best K-pop album I've listened to. Just really fun, energetic, upbeat pop music. Extraordinarily catchy, and it will just make you smile through the whole thing. I'd give it my highest recommendations.