You can always try.
The two basic types of Dispute are Item Not Received and Item Not As Described.
But are these digital items?
There are very few allowable actions with digital items.
Try the Resolution Centre (at the bottom of this page) but the PP Resolution Centre might be better.
If you don't mind not attending the concert at all, of course, since basically the Dispute would cancel the transaction, refund your money and leave you back where you were before you bought.
It might be simplest to go to your credit card and cancel the payment or start a chargeback. There is a 1-800 number on the back of your credit card.
Hmm-- would the original seller of the tickets (not your reseller) or the concert hall be able to exchange your unwanted tickets?