A quartet centered around jazz pianist Robert Glasper, the Robert Glasper Experiment originally featured bassist Derrick Hodge, drummer Chris Dave (from the pianist's acoustic trio), and Casey Benjamin on saxes and vocoder. They made their debut on half of Glasper's two-disc Double Booked on Blue Note in 2009. While the first half featured Glasper's acoustic trio, the Experiment contrasted it on the other, incorporating elements of neo-soul, hip-hop, and jazz-funk into their sound. The Experiment has also been open to working with vocalists. On their second CD -- and first sta...