Acid rap is a subgenre of hip hop which fuses rock-based beats and lyrics involving subjects such as death, drug use, evil, paranoia and sex. The term was first coined by Detroit rapper Esham, who defined the genre as analogous to "'modern day blues [or] heavy metal'", Esham has been cited as one of the innovators of the genre, and compared his lyrical content to hallucinations induced by LSD. Acid rap has also been described as a fusion of hip hop beats and death metal lyrics, and Esham's music has also been cited as an example of "horrorcore" hip hop.