The Cramps are a band whose only permanent members have been Lux Interior (Erick Purkhiser) and Poison Ivy (Kristy Wallace), the lead singer and lead guitarist respectively. Their musical style is rockabilly, mostly in twelve bar blues form, played at varying, (though usually fast) tempos, with a very minimal drumkit. The content of their songs and image is sleaze, trashy Americana (much in the style of filmmaker John Waters), sexual fetishism, clever bad jokes, and cheap, horror B-movie cliches.