The 2005 Quasimoto album "The Further Adventures of Lord Quas" met with warm reception and continued the Quasimoto tradition of using vocal samples from Melvin Van Peebles, who is credited on the album liner notes as a collaborator. Throughout the rest of the decade Madlib continued to release jazz material simultaneously with his hip hop work: "Perseverance" with Percee P, "Liberation" with Talib Kweli, "Sujinho" with Ivan Conti of Azymuth, his own instrumental hip hop series Beat Konducta, "In Search of Stoney Jackson" with Strong Arm Steady, "O. J. Simpson" with Guilty Simpson, and production work for artists such as Erykah Badu and De La Soul.