Herbie Hancock has delved into the pop world before. But never has he immersed himself so deeply as he has done for his new album, Possibilities, on which he teamed with vocalists and instrumentalists such as Sting, Paul Simon, Annie Lennox, John Mayer, Carlos Santana, Trey Anastasio, Christina Aguilera, Angelique Kidjo, Joss Stone, Damien Rice and Raul Miclon. The album has tremendous commercial potential, as it's produced, distributed and marketed by Starbucks' Hear Music label.