A quartet centred 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 one half of Glasper's two-disc Double Booked for Blue Note in 2009. While the first half featured Glasper's acoustic trio, the Experiment contrasted on the other, incorporating elements of neo-soul, hip-hop, and jazz-funk into their sound.