Beats are such an integral part of rap music that many producers have been able to make instrumental mixtapes or albums. Even though these instrumentals have no rapping, listeners still enjoy the inventive ways the producer mixes different beats, samples and instrumental melodies. Examples of these are 9th Wonder's "Tutenkhamen" and J Dilla's "Donuts". Some hip hop records come in two versions: a beat with rapping over it, and an instrumental with just the beat. The instrumental in this case is provided so that DJs and turntablists can isolate breaks, beats and other music to create new songs.