South Korean rapper Psy says he'll unveil his much-awaited follow-up to Gangnam Style next month and celebrate it with a huge concert in Seoul.

The K-pop performer made the announcement Friday on YouTube, where his Gangnam Style video has a record 1.39 billion views.

Psy said he'll release the new single on April 13 and hold a concert at a soccer stadium that evening. He's dubbed the concert "Happening" and says it will be broadcast live on YouTube.

The rapper, whose real name is Park Jae-sang, has been on a worldwide tour since his viral video made a global splash in July, with its catchy tune and much-imitated horse-riding dance. He recently released a Gangnam Style remix and performed at the inauguration ceremony for South Korea's new president.