"Angel" is a song by Canadian singer-songwriter Sarah McLachlan. The song first appeared on McLachlan's fourth studio album, Surfacing, in 1997 and was released as the album's fourth and final single in September 1998. From Wikipedia
The singer parodied her iconic Toy Story 2 ballad with macabre lyrics for an Itchy & Scratchy montage, exploring themes of nostalgia and growing up.