Am I Going Insane (Radio)

"Am I Going Insane (Radio)" is a single by the English heavy metal band Black Sabbath from the 1975 album Sabotage. Although common conception is that the suffix "Radio" was said to be added to the title because it was made for the purpose of being played on the radio, drummer Bill Ward said that it was Cockney rhyming slang for "mental"—radio-rental. Critics have noted the coincidence of the title and the fact that all Black Sabbath members except Tony Iommi were later clinically depressed. Also, as the song fades, there is a disturbing cry that sounds like someone going 'mental.' It has been theorized that the recording was of Jessica, Ozzy's daughter, but a 1975 interview with him suggests that it was not Jessica. The engineer for Sabotage revealed that it came from an unmarked cassette found at the studio.