This Is It is a previously unreleased song by Michael Jackson, released as a promotional single for the This Is It documentary and the 15th track to the movie's soundtrack. The song was co-written and recorded with Paul Anka in 1980 under the title "I Never Heard". The song was intended to be added as an album track on Anka's album, Walk a Fine Line, although ultimately it didn't make the cut. Jackson once took cassettes of songs from Anka without his permission, because of which Paul threatened to sue MJ. When returning the tapes to Paul, he insisted that MJ made his own copy of I Never Heard and re-title the song to This Is It. After Michael's passing in 2009, his brothers found a box with cassettes with a "bare bone" demo of This Is It featuring only piano and vocals. The song got reworked by John McClain and Mervyn Warren with backing vocals done by The Jacksons. Although the song has nothing to do with it, it was used by Sony to promote the ...