In excess of two million songs have been purchased and downloaded using the iTunes Music Store since its debut 16 days ago, Apple announced today.

Matching the trend set last week, over half the songs purchased were acquired as albums - quelling concerns that selling music on a per-track basis will destroy album sales, Apple claimed.

Apple CEO Steve Jobs said: "Response to the iTunes Music Store has been phenomenal. We've clearly hit a chord with users."

"We're adding new songs every day, giving music lovers even more reasons to legally download their favourite music," he said.

At a tariff of 99 cents per song, or $9.99 for most albums, Apple's online music store offers in excess of 200,000 tracks. Another 4,300 songs were added to the collection yesterday, including five albums from The Doors.

Other music added to the catalogue includes: Fischerspooner's album Number One, plus an exclusive remix of their hit single, Emerge, and new albums from Cold, Liz Wright and Yeah, Yeah, Yeah.

US customers can also purchase pre-release tracks from forthcoming albums from Michelle Branch, Da Brat, Jesse Harris and Kenna, as well as songs from John Coltrane, Charlie Mingus, Nina Simone, Paul Oakenfold and Staind.

The complete collection of Alanis Morissette releases are also available now, Apple said.