Beatles songwriter Paul McCartney's solo material went live yesterday on Napster, RealNetworks' Rhapsody, Viacom International's Urge and Microsoft's Zune Marketplace. But Apple, which made a big deal earlier this month about adding Paul McCartney's 25-album catalogue to its iTunes music store, was the odd man out, with no McCartney material on offer.

Rhapsody, a monthly subscription service, had all 25 of McCartney's albums on its site for real-time streaming, and was also selling tracks for its usual $0.89 each.

In a press release on May 15, Apple said: "Paul McCartney's full catalogue of 25 solo albums will be available for the first time digitally on iTunes later this month."

McCartney's catalog was to be a precursor to the Beatles backlist going digital - earlier this month, McCartney told Billboard magazine that a deal to sell Beatles tunes online was "virtually settled" - but some or all of those plans may have been held up by the news that EMI Group, McCartney's former label and the home of the Beatles, will be acquired by a private equity firm for $4.7bn.

Apple did not respond to request for comment.