Genre: Rock
Style: Hard Rock
Country: Canada
Label(s): Polydor (PDSX 2271)
0A. Deep Purple - Knocking at Your Back Door (Full-Length Version) 7:000B. Deep Purple - Son of Alerik (Previously Un-released) 10:00More from: Deep Purple
Genre: Rock
Country: US
Label(s): Mercury (PRO 332-1)
0A. Deep Purple - Knocking at Your Back Door (Album Version) 7:000B. Deep Purple - Knocking at Your Back Door (AOR Edit Version) 5:39More from: Deep Purple