First - these are some of the greatest, blazing, knock down bluesy, funkiest tracks ever performed by real singers and backed by real musicians - classics all.
The only downside is that for most long time collectors, you might already have virtually of the tracks (FIRE by Etta James, RESCUE Me by Fontana Bass - not exactly hard to find tracks, etc ...no real rare tracks) but instead of having to make your own mix CD, Chess/Mojo has done that for you.
And really, these songs and performances are so great with GREAT sound quality, this CD miight just replace a bunch of older CD's anyway.