WiseGuys has the John Prine pre-sale passcode: For a little while you can order your concert tickets before anyone else!!! 
Now is the time to order your tickets – before they go onsale and sell out! Purchase your tickets now to see John Prine in Nashville!
Here is what we know about the John Prine concert:
John Prine
Ryman Auditorium
Nashville, TN
Fri, Oct 25, 2013 08:00 PM – Sat, Oct 26, 2013 08:00 PM
Onsale to General Public
Starts: Fri, 05/31/13 10:00 AM CDT
Internet Presale
Starts: Thu, 05/30/13 10:00 AM CDT
This Presale Ends at: Thu, 05/30/13 10:00 PM CDT
You can use this pre-sale passwords and information to order your tickets: