Possibilities is a studio album by the American jazz pianist and composer Herbie Hancock, released in 2005. On the record Hancock collaborates with a wide range of guest artists from pop, rock and soul, blending jazz with other genres. Contributions come from Christina Aguilera, John Mayer, Sting, Annie Lennox, Paul Simon and Santana, among others. Each track pairs Hancock's distinctive piano playing with the style of his guest, resulting in a varied and accessible whole. Possibilities fits the tradition of collaborative albums through which Hancock kept exploring genre boundaries across the decades.