Who are these extra musicians and what do they do?

[EricBliss12345]

I got bored tonight so I went up to Wal-Mart and picked up Say You Will.

Under additional performers it lists several people, Sheryl Crow, Chris ()and a few dudes, Jamie Muhobasomething, Dave Palmer, John Pierce, and John Shanks.

I hate when bands do this! I like when they list the additional performances under the printed lyrics for the song a la the Stones Voodoo Lounge, etc.

What do these extra people do and on what songs? I'd especially like to know where Sheryl Crow is because I've played it through a few times and haven't heard her anywhere. Thanks Mr. Stew for telling me where to find Christine! (although she's barely audible...urrgh)

Thanks