Swedien and Jones stated that Vincent Price recorded his introduction and voice - over rap for the song in two takes ; Jones , acknowledging that doing a voice - over for a song is `` difficult '' , praised Price and described his recording takes as being `` fabulous '' . Swedien said of Jackson recording the song , that , `` I tried all sorts of things with Michael -- for instance , he would sing the main vocal part and we 'd double it one time and then I 'd ask him to step away from the mic and do it a third time and that really changed the acoustics in the room so it gave Michael 's vocals a unique character ... We recorded some of those background vocals in the shower stall at Westlake . ''

Question: who did the voiceover in michael jackson's thriller
Answer: Vincent Price