What song does Ozzy refer to in his song "Dreamer"  that was written by John Lennon, that encourages a world at peace?
Dreamer (Ozzy Osbourne song) "Dreamer" is the third track from Ozzy Osbourne's album "Down to Earth", which was released on October 16, 2001. The single peaked at number 10 on "Billboard'"s Mainstream Rock Tracks. The song describes the rockstar's vision of a better world for his children, where they are happy and safe. In the liner notes to Osbourne's "Prince of Darkness" box set, Ozzy refers to this song as his version of John Lennon's "Imagine". A second video was also produced, featuring highlights from "The Osbournes". The Japanese and European press of the single also include a slightly different version of the song Dreamer, dubbed on the single "Dreamer (acoustic)", and a previously unreleased song titled "Black Skies".
Down to Earth (Ozzy Osbourne album) Down to Earth is the eighth studio album by British heavy metal vocalist Ozzy Osbourne. Released on 16 October 2001, the album reached number 19 on the UK Albums Chart and number four on the US "Billboard" 200 albums chart. "Down to Earth" spawned just two singles, although both reached the top-ten of the US Hot Mainstream Rock Tracks chart and reached number 18 on the UK Singles Chart. The album was certified Platinum and has sold over 1.6 million copies worldwide.