Jonathan Howsmon Davis, also known as JD, is an American singer, songwriter, and musician. He is the lead vocalist and frontman of nu metal band Korn, which is considered a pioneering act of the nu metal genre. Davis's distinctive personality and Korn's music influenced a generation of musicians and performers who have come after them.

Nu metal is a subgenre of alternative metal that combines elements of heavy metal music with elements of other music genres such as hip hop, funk, industrial, and grunge. Nu metal rarely features guitar solos or other displays of musical technique, and emphasizes rhythm with instrumentation that is heavily syncopated. Nu metal guitarists typically use seven-string guitars that are down-tuned to produce a heavier sound. Vocal styles are often rhythmic and influenced by hip hop, and include singing, rapping, screaming and sometimes growling. DJs are occasionally featured to provide instrumentation such as sampling, turntable scratching and electronic background music. Nu metal is one of the key genres of the new wave of American heavy metal.