I, as an avid David Cook fan, began following his bandmates. Their band, MWK, was a staple of my iPod. I started listening to them again recently--and came across something I remember vaguely reading about a while ago on Twitter.
That is a link to a sampler of MWK's acoustic album, The Sanctuary Live Sessions, which are basically acoustic renderings of some of their songs--plus a few I hadn't heard before--and they're beautiful. And yes, you can hear Neal sing backup, Jess.
"One True Thing" is my favorite.