Listen to When You Believe - (Originally Performed By Leon Jackson) [Karaoke Version] online. When You Believe - (Originally Performed By Leon Jackson) [Karaoke Version] is an English language song and is sung by Audio Idols. When You Believe - (Originally Performed By Leon Jackson) [Karaoke Version], from the album Ultimate Karaoke: Just The Boys, was released in the year 2011. The duration of the song is 4:12. Download English songs online from JioSaavn.