The five bonus songs contained within the Wii version of Harmonix's Rock Band have been revealed to be tracks previously released as downloadable content for the PlayStation 3 and Xbox 360 iterations, reports Joystiq.

According to the site, which recently went hands-on with the Wii edition of the multi-instrument music title, the five tracks accompanying the 45 main songs and 13 bonus tracks of the previously-released editions:

• "Dirty Little Secret" - The All American Rejects
• "Don't Look Back in Anger" - Oasis
• "Roam" - The B-52's
• "Rockaway Beach" - The Ramones
• "Roxanne" - The Police

The above, along with many others, are currently available for purchase and download within the PlayStation 3 and Xbox 360 editions of the game. Had the songs been new, it is likely they would have eventually appeared as downloadable content, much like the forthcoming European bonus tracks.

Both the Wii and PlayStation 2 versions of Rock Band lack the online play of other editions and do not support downloadable content due to the systems' lack of storage capacity. Co-developed by Harmonix and Pi Studios, the Wii edition of Rock Band arrives in North America on June 22.