Time Machines is Coil's landmark drone music album, released under the alias Time Machines. It consists of four tracks which are composed of a single tone, called a drone. Each tone represents a certain hallucinogenic chemical (see track titles). It is similar to Brian Eno's early ambient albums, except instead of creating an atmosphere of calm, it facilitates time travel, according to band founder John Balance. Each tone was tested and retested in the studio for maximum narcotic potency.