The original theme was composed by Mark Snow for The X-Files, the science fiction series that premiered in 1993 and made its whistled melody a universal cue for aliens and government cover ups. This Bam Bam edition is a fan made remix shared on soundboards and in short video edits, layering a heavy repeated drum hit over that melody. It spread because the pairing is instantly readable, taking a serious paranormal intro and making it playful enough for modern meme reactions and conspiracy jokes.