On Sunday, North Korea’s leader Kim Jong-un attended the performance in Pyongyang with his wife Ri Sol-ju, sister Kim Yo-jong and other senior officials, including nominal head of state Kim Yong-nam.
After the concert, which lasted for more than two hours, Kim and his wife Ri Sol-ju shook hands with the South Korean pop stars and took pictures with them backstage, CNN reported.
Kim Jong-un "was deeply moved to see our people sincerely acclaiming the performance, deepening the understanding of the popular art of the southern side," North Korea’s state news agency KCNA wrote.
Another concert, a joint North-South performance, is scheduled for Tuesday.
The concerts and sports demonstration come after a period of diplomatic thaw between the two nations.
Even though South Korean pop singers have previously performed in North Korea in the past, Sunday’s concert was the first one ever attended by a North Korean chief.
The shows come after Pyongyang sent performers to the PyeongChang Winter Olympics in South Korea earlier this year.
They also precede a historic summit between Kim Jong-un and South Korean President Moon Jae-in on April 27.
On Monday, North Korea apologized to South Korean journalists for restricting their access to Sunday’s concert in Pyongyang.
Yonhap news agency reported on Monday that South Korean reporters were not allowed inside the concert hall except for just one cameraman.
A senior North Korean official visited the South Korean reporters at their hotel in Pyongyang and said that "it was a mistake to restrict the coverage and prevent free footage."