Apple has announced that just four days after it rolled out its iTunes Music Store in Japan, the number of songs downloaded has already sailed past the 1 million mark.

The news means that the download rate is faster than any of the service's launches in the 20 nations it's now available.

“iTunes has become Japan's number one online music store in just four days,” said Steve Jobs, Apple's CEO. “iTunes has sold twice as many songs in just four days as all the other online music services in Japan sell in one month.”

Apple, has yet to sign a deal with Sony 's music division, Sony Music Entertainment, which has some of the biggest-selling Japanese singers and bands on its books and something Sony seems keen to keep to itself and its own music download service.