EntityQ3746050· pop 6· linked from 138 articlesKnocking at Your Back DoorSign in to save1984 single by Deep PurpleConnectionsRod EvansEntityInternational Standard Book NumberEntityBlack SabbathEntityanal sexEntityDeep PurpleEntitymusic genreEntityrecord producerEntityhard rockEntitysingleEntityBillboard Hot 100EntityGoogle BooksEntityrecord labelEntityGary MooreEntityJon LordEntitysongwriterEntityIan GillanEntityRitchie BlackmoreEntityDavid CoverdaleEntityJoe SatrianiEntityWhitesnakeEntityCategories1984 singles1984 songsAnal sexDeep Purple songsMercury Records singlesPolydor Records singlesSong recordings produced by Roger GloverSongs written by Ian GillanSongs written by Ritchie BlackmoreSongs written by Roger Glover