I found myself being unable to project my voice and to mean what I sing for yesterday's warmup before Mass. It was, to me, a bad thing.
I said my usual Chorister's Prayers before Mass and without being initially aware of it, I discovered that I could do the above for Mass. These prayers have been used by God to reveal His power unto me and to once again instill in me the realization that I am singing merely on a borrowed voice. All glory goes back to Him!