Singer-songwriter Taylor Swift released her third studio album "Speak Now" in October 2010. She wrote the album entirely by herself, as a statement to her critics that she was a capable songwriter. Co-produced by Swift and her longtime collaborator Nathan Chapman, the album musically expands on her characteristic country pop sound, with increasing elements of radio-friendly pop crossover, which had been evident on its predecessor "Fearless" (2008). It incorporates various rock styles, including pop rock and bluegrass. "Speak Now" was the fastest-selling digital album by a female artist, with 278,000 downloads in a week, earning Swift an entry in the 2010 "Guinness World Records". At the 54th Grammy Awards in 2012, the album was nominated for Best Country Album, and its single "Mean" won Best Country Song and Best Country Solo Performance.