So guess what is the most popular song to play on Halloween parties today (31 October)? Having trouble? Let me help you: Michael Jackson's THRILLER. Music-news reports that Spotify analysed over 600,000 Halloween themed playlists with Thriller by Michael Jackson coming out as the most featured song, with Bobby 'Boris' Pickett's Monster Mash, following closely behind. So let's go carve a pumpkin, put on our scariest outfits and go trick or treating, with THRILLER blearing from the hi-fi.