The Hungarian Post Office, Magyar Posta, has released 'audible' postage stamps to mark the 200th anniversary of the birth of Richard Wagner and Giuseppe Verdi.
No, they won't sing to you. But with a smartphone you can read the QR code printed on the stamps. This takes you through to a special section on the Hungarian State Opera House’s web site containing information and recordings.
Snap the QR codes below if you want to listen in without shelling out.