"There could be content that welcomes our president (in the performance) and the title could be changed," said Yoon Young-chan, the senior secretary to President Moon for public relations during a press briefing in Seoul.

The event is mostly aimed at extolling the North's leaders and the socialist system so it is regarded as a major propaganda tool.

It has caused controversy over violations of human rights as a large number of children are usually mobilized for intensive training.

In 2007, then-South Korean President Roh Moo-hyun faced criticism from conservatives at home after he attended the Arirang performance during his trip to Pyongyang for a summit with then-North Korean leader Kim Jong-il. Roh watched the event, along with Kim Yong-nam, the North's nominal head of state.

Apparently in consideration of such concerns, Yoon said that the North has made efforts to "reflect our stance." He did not confirm whether leader Kim will join the event.

Media reports showed that the performance unveiled on the North's founding anniversary appears to be short on anti-US slogans, which used to be a mainstay of the previous mass games.

Instead, it occasionally signaled leader Kim's stepped-up efforts on diplomacy.

The latest performance drew attention as it used drones, lasers and other colorful and state-of-the art techniques, which experts say might demonstrate the North's strong commitment to science, technology and economic development.

In particular, a large screen composed of car sections showed images related to the April 27 summit talks between Moon and North Korean leader Kim Jong-un. The performance is likely to run until Oct. 10, the anniversary of establishment of the North's ruling party. (Yonhap)