What number album of Taylor Swift did Colbie Marie Caillat win a Grammy for?
Colbie Caillat: Colbie Marie Caillat ( ; born May 28, 1985) is an American singer, songwriter, guitarist and pianist from Thousand Oaks, California. Colbie Caillat:  She was also part of the group that won Album of the Year at the 2010 Grammy Awards for her background vocals and writing on Taylor Swift's "Fearless" album.
i don't know