In what appears to be further confirmation that September 7's announcement will be for the Motorola iTunes phone, Revolution Magazine is reporting today that several artists from many different generations will be appearing in an upcoming ad for the product.

It is reported that Motorola has signed an artist from every generation to appear in the ads, including Little Richard, Bootsy Collins, Lil' John, The White Stripes, Sleater-Kinney, Sum 41, Mya, Pussycat Dolls and Billie Joe from Green Day.

Look-a-likes of Beethoven, Jimi Hendrix and Biggie Smalls are also featured.

Madonna reportedly shot her portion of the ad yesterday.