Festive occasion assured!
Best to arrive early for good seats. Concert begins at 4 pm. 10/15 euros. American Cathedral, 23 av. George V http://www.parischoralsociety.org/
"Paris is in truth an ocean that no line can plumb. You may survey its surface and describe it; but no matter how numerous and painstaking the toilers in this sea, there will always be lonely and unexplored regions in its depths, caverns unknown, flowers and pearls and monsters of the deep overlooked or forgotten by the divers of literature."
Scram -- va-t'en! Start reading.
You can thank me when you've finished the last page and you decide to name your poodle Rastignac.