Angel voice (a poem)

I write more poems than I publish, but occasionally a scrap of verse seems to tangle well with itself and I think, 'hmmm, maybe I could show this to people'. 

So, anyway, here goes:

ANGEL VOICE

I used to be a high-flying angel
But they clipt my wings
After I slipped and sinned and fell

And tho’ now a broken earth-tied angel
Yet my crypt still sings
Heav’n’s secret songs, too sad too sweet to tell