The search for "certain" delivered 2 verses in 2 songs on 2 records.
The dragon searched for the following: "certain" as keywords
Here are the matching verses:
Black Sabbath: Live Evil
11. The Sign Of The Southern Cross / Heaven And Hell (continued)
If an echo doesn't answer
When it hears a certain song
Then the beast is free to wander
But never is seen around
Black Sabbath: Mob Rules
3. Sign of the Southern Cross
If an echo doesn't answer
When it hears a certain song
Then the beast is free to wander
But never is seen around