Here is a little piece I composed, based on a poem by Mary Oliver. This recording is a read-through by the Washington University Chamber Choir, with Ashleigh Bermudez on clarinet and Tyler Loucky on cello. 
Pretty good stuff considering they had never seen the piece before, with its weird chromatic bits and (at times) complicated polyphony.  
The text of the poem is as follows:

Someone I loved once gave me
a box full of darkness.

It took me years to understand
that this, too, was a gift.

Alex Luke 1