Alphabetically Organized by Album Era:

Utopia (2004-2006)
• End of the Day [Performed by Kara DioGuardi]
• Good... Good [Performed by Kandi Buruss]
• I See You [Performed by Kara DioGuardi] - Reworked as "Alguien Mas"
• If We Were [Performed by Shelly Peiken]
• Remember Me [Performed by Skye Sweetnam] - Reworked as "¿Quien es Feliz?"
• The Corner [Performed by Sia] - Reworked as "Utopía"

Carpe Diem (2007-2009)
• Into The Mirror [Performеd by Cathy Dennis] - Reworked as "Duеle"
• Rock Candy [Performed by Porcelain Black] - Reworked as "Lolita"

Catarsis (2010-2013)
• Weightless [Performed by Diane Warren] - Reworked as "Nada"