Er der en lykkelige klokke?
Sounds like the German "Glocke"
Listening implies she is expecting it? Hearing something is more of a reaction to something? I'm not sure :-) just a guess.
That is such a poetic sentence.
Why not listens?
The phrase suggests it is a regular church bell, which produces a «sad» sound in minor. Bells in major have only been developed recently
Isn’t this plural- sad bells?