"The Cesium song 07" joke

Yesterday,
I had Cesium with which to play.
Now all my fingers have been blown away.
And silence reigns since yesterday.
Suddenly,
I'm just half the man I used to be.
I have no eyes with which to see.
My legs have parted company.
Why she had to blow,
I don't know,
I can only say.
Something went awful wrong,
In the waterbed where we lay.
Yesterday,
Her sky blue path seemed such an easy way.
Now I know there is a price to pay.
Oh, I believed just yesterday.
-Songs of Cesium #117