Beatboxing, popularized by Doug E. Fresh,[99] is the technique of vocal percussion. It is primarily concerned with the art of creating beats or rhythms using the human mouth.[100] The term beatboxing is derived from the mimicry of the first generation of drum machines, then known as beatboxes. As it is a way of creating hip hop music, it can be categorized under the production element of hip hop, though it does sometimes include a type of rapping intersected with the human-created beat. It is generally considered to be part of the same "Pillar" of hip hop as DJing—in other words, providing a musical backdrop or foundation for MC's to rap over