I know why the caged bird sings;

security, she has the things.

I know why the caged bird sings;

a birdy in a coal mine.

Songs so nice, the songs you hear.

She's so fine, she has no fear.

Songs so nice, the songs you hear;

canary in a coal mine.

Oh so cruel, pretense was nice,

she won't deign to let you twice.

Oh so cruel, pretense was nice;

the promise in a coal mine.

Words and fists, they steal her life,

nights of feuds and days of strife.

Words and fists, they steal her life;

a fight there in a coal mine.

She's no more, she's gone away.

you can't howl and make her stay.

She's no more, she's gone away;

a cold cage in a coal mine.

Grieve her now, the freed bird sings,

she flies from us, she's on the wing.

Grieve her now, the freed bird sings,

Broken-heart, in a coal mine.

~~~

The prompt was to compose a poem based on a metaphor