Psy plans new album in September

South Korean "Gangnam Style" rapper Psy plans to release a new album in September and says he has already recorded three songs for the project.

"Already done with three songs and they are kinda nice," the singer announced on his Twitter account on Tuesday.

His agent said the singer was working on the as-yet untitled album in Los Angeles.

"Gangnam Style", released a year ago, made Psy an international star, and is the most popular video of all time on You Tube with 1.7 billion views.

His follow-up video and single "Gentleman" was inevitably less successful, but still managed to top the charts in a host of countries and has racked up 500 million views since its release in April.

In a recent interview with the Sunday Times magazine, Psy hinted at an alcohol dependency, describing soju -- a Korean liquor brewed from sweet potatoes -- as his "best friend" and "vice partner".

"If I'm happy, I'm drinking, if I'm sad, I'm drinking. If it's raining, I'm drinking, if it's sunny, I'm drinking. If it's hot, I'm drinking, if it's cold, I'm drinking," he told the British newspaper.

He takes a break from liquor "when I'm hungover," he added.