The song generates a one use key to a known house, estate or other domicile. After that all you need is a door (ore arched gate) with a lock.
And the door opens up in the specified house, or to a gate.
Interestingly enough this is a fairly common shtick for some universes.
And the door opens up in the specified house, or to a gate.
Interestingly enough this is a fairly common shtick for some universes.