<Ul> <Li> Patrick Meehan </Li> <Li> Black Sabbath </Li> </Ul> <P> "Changes" is a song by Black Sabbath . It first appeared on Vol. 4 which was released in 1972 . </P> <P> The song's piano melody was composed by guitarist Tony Iommi, who was experimenting with the instrument in the studio . The lyrics were by bassist Geezer Butler, and vocalist Ozzy Osbourne has referred to the song as "heartbreaking". Quite different from Sabbath's previous work, the song was described as a "forlornly pretty" ballad by critic Barney Hoskyns . It was inspired mainly by Bill Ward's breakup with his first wife . </P> <P> "We're certainly not going to get any less heavy," Ozzy promised in 1972 . "We will probably do' Changes' on stage with a Mellotron but we'll never take strings on stage with us or anything like that ." </P>

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