WiseGuys has the Yanni pre-sale code: This is your best chance to buy tickets for Yanni before the general public !!! 
This might be your one chance ever to see Yanni live in Philadelphia !
Yanni concert info:
Yanni
theMann.
Philadelphia, PA
Sat, Aug 23, 2014 08:00 PM
American Express Presale
Start: Wed, 02/26/14 10:00 AM EST
This Presale Ends at: Thu, 02/27/14 10:00 PM EST
Yanni Fan Club Presale
Start: Tue, 02/25/14 10:00 AM EST
This Presale Ends at: Wed, 02/26/14 10:00 PM EST
Onsale to General Public
Start: Fri, 02/28/14 10:00 AM EST
This Presale Ends at: Sat, 08/23/14 08:00 PM EDT
You can use this presale passwords and information to order your tickets: