Acid rap is a subgenre of hip hop music, fusing 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 heavy metal'", Esham has been cited as one of the innovators of the genre, and compared his lyrical content to hallucinations induced by LSD. Esham's music has also been cited as an example of "horrorcore" hip hop.The hip hop group Inner City Posse adopted the acid rap style as a means of distinguishing themselves stylistically from other hardcore hip hop groups, under the suggestion of member Joseph Bruce, who also gave the group its new name, Insane Clown Posse. According to author Cheryl Lynette Keyes, Esham's "metal sound with a hip-hop feel" formed the musical basis for acts such as Kid Rock, Korn, Limp Bizkit, Everlast, and Kottonmouth Kings.