play for keeps & live blues
In John Grisham's book"The Firm", last sentence of chapter15:
They 're out there and they play for keeps.
chapter 16, "a single bar with good food and live blues"
I don't understand:
1. play for keeps
2. single bar (a bar only for single, not for couples?)
3. live blues (does blues mean some sort of music ro folk songs?)
thank you for helping me