http://en.wikipedia.org/wiki/Choir....
A body of singers who perform together as a group is called a choir or chorus...

Since its beginnigngs in 1970, Alexandria Choral Society has strived to enhance the cultural life of the city of Alexandria blending individuals into one voice - and together making music.

As a thank you for your donations - ACS is offering the following gifts.

$25 -A personalized recording of "Happy Birthday" from Pro Coro Alexandria.
The ACS chamber choir will pronounce good tidings and great joy for the recipient of your choosing. You will be provided you with a private link to the recording and can send it your birthday girl or boy on their natal day!

$50 - Show your support for ACS everywhere you go!
An ACS tote bag, coffee mug, or stainless or Trek water bottle.

$75 - A pair of tickets to an ACS concert next season
Be our guests at your choice of our fall or spring regular season concerts.

$200 - Pair of season tickets for 2013-2014

Or opt to donate your selection back to the choir to maximize your giving dollars!