Listen to Knock on the Door - Scary Halloween Sound Effect online. Knock on the Door - Scary Halloween Sound Effect is an Unknown language song and is sung by Halloween Party Album Singers. Knock on the Door - Scary Halloween Sound Effect, from the album Vampire Music - Horror Halloween Music & Spooky Sound Effects, was released in the year 2015. The duration of the song is 0:09. Download Unknown songs online from JioSaavn.