A song, but from who?

 From the singer's throat floats

emotion filled notes.

 The agony lessens

with the songs progressions.

 As the singer draws near

the keeper knows it has nothing to fear.

 It now knows

that a dove is where the song flows.

 Keeper's ears discover something new.

A song, but from who?
 From the singer's throat floats

emotion filled notes.

 The little dove fits

with the keeper and sits.