Bird songs for id'ing purposes

It would be great if contributors could describe the songs or sounds along with their photos. I have some resource links, but hesitate to post unless this would be ok - they are non commercial links.

Dea

I bought a Petersons Field Guide CD that has all the real bird calls on it and it was very helpful.

I'm not sure I would be able to do many bird songs except for the easy ones like a Black capped Chickadee.

Chik-a DeeDee (LOL)

Here is a site that might be helpful.
http://www.birds.cornell.edu/AllAboutBirds/

Thanks!