Of course I appreciated the fact that it was anxiety provoking to be asked to sing a piece of music that you haven't heard 1,000,000 times. OK, so you didn't know the melody that well. I didn't either. That's why the nun gave us sheet music.
I say this lovingly because it might be considered bad form, given that we are The Church Choir, to simply refuse to lend your voice (leaving the Amerikanka in an unplanned solo) during Mass.
I could be wrong.
PS: But thank you for chiming in half way through the first verse. (I'm sure the congregation didn't suspect a thing...)