CD Recording Copyright

To anyone who might know,

I'm going to record our high school choral concerts on CD. I'd like to
sell them. I know there is a mechanical license to be paid for pieces
already *distributed to the US public.* I also know the cost is 8 cents
per piece 5 minutes or less and 1.55 cents/minute for pieces longer than
5 minutes.

My question is - whom do I pay? Is there an easier way to do this than
contact the publisher of every single song I record? Isn't there some
*main office* somewhere that can provide the paperwork. I've had a
company record and sell before, and they have taken care of mechanical
license, but they've never requested a publisher name from me.

Any help?

Chris ILG