Possibilities  Possibilities is the forty-fifth studio album by American jazz musician Herbie Hancock, released in the United States on August 30, 2005, by Vector Recordings. The album features a variety of guest musicians such as Trey Anastasio, John Mayer and Carlos Santana. It earned Hancock two nominations at the 2006 Grammy Awards: Best Pop Collaboration with Vocals for "A Song for You" (shared with pop singer Christina Aguilera) and Best Pop Instrumental Performance for "Gelo na Montanha" (shared with rock singer-guitarist Trey Anastasio). A motion picture entitled "Herbie Hancock: Possibilities", released on DVD on April 18, 2006, depicts the recording of this album in many different discussions and performances with the collaborating artists. The DVD also includes a demo CD with four of the 10 songs on the album.