From Carmina Burana, #12, Olim Lacus Colueram
Once I dwelt in the lakes;
once I was a beautiful swan
O miserable me!
Now I am black
and roasted to a turn!
The cook turns me on the spit,
the fire roasts me through
and I am prepared for the feast
Now in a serving dish I lie
And can no longer fly
Gnashing teeth confront me
As far as I know, this is the highest placed solo for tenor voice in classical literature. The pained mewling of the tenor much convey's the swan's discomfort.
In the 1930s, German composer Carl Orff set these 13th century texts to music, and "O, Fortuna!" is the one you are most likely somewhat familiar with. Its melody was a heavy influence in the theme and variations of the superb soundtrack of Last of The Mohicans. Great stuff.
Here's a bizarre but wonderful video of this aria I found. Several videos I saw featured countertenors(male soprano), which doesn't sound appropriate, in my opinion. This guy is more like a classical Italian tenor, and his technique is superb.