While its viewership has continued to drop from last season, averaging fewer than 8 million viewers through the show's first three airings, "American Dreams" continues to get a diverse roster of contemporary musical guests taking advantage of the opportunity to portray their heroes on the show-within-the-show of "American Bandstand."

Barrino, who won her "Idol" crown in May, will sing "R-E-S-P-E-C-T" in the guise of her own idol, Aretha Franklin. Clarkson will reprise her role as Brenda Lee, this time singing "Rock Around the Christmas Tree." Both "Idol" stars will appear in November.