iPhone operator partner O2 has announced it will team up with Napster to offer the UK's largest full track mobile music download service.

Available exclusively on mobile through O2 Active, the Napster Mobile service provides access to over five million songs and dual delivery of tracks to both the customer's mobile phone and PC via email.

Napster on O2 will provide single tracks initially priced at 99p, for a promotional period only, or 5 tracks for £4. The Napster service will be accessible through O2 Active on over 30 different handsets.