With "Gorillaz", Albarn began to branch out into other genres which he had not explored with Blur, such as hip-hop, dub and Latin music, a process he described as liberating: "One of the reasons I began Gorillaz is I had a lot of rhythms I never thought I could use with Blur. A lot of that stuff never really seemed to manifest itself in the music we made together as Blur." Albarn originally began work on the album by himself, however eventually invited American hip-hop producer Dan "The Automator" Nakamura to serve as producer on the album, explaining "I called Dan the Automator in after I'd done more than half of it and felt it would benefit from having somebody else's focus. So I just rang him and asked whether he was interested in helping me finish it off." Nakamura and Albarn had recently collaborated on "Deltron 3030", the debut album by the hip-hop supergroup of the same name featuring rapper Del the Funky Homosapien and DJ Kid Koala, both of whom Nakamura recruited to assist in finishing Gorillaz material. Del featured on two tracks on the album, including the lead single "Clint Eastwood", while Kid Koala contributed turntables to various tracks. The album featured additional collaborations with Ibrahim Ferrer of Buena Vista Social Club, Miho Hatori of Cibo Matto and Tina Weymouth of Talking Heads and Tom Tom Club, representing a pattern of collaboration with a wide range of artists which later became a staple of Gorillaz as a project.