Petroc Trelawny presents a special edition of In Tune from Edinburgh, home in August to both the Edinburgh International Festival and the Edinburgh Festival Fringe. Petroc talks to Festival director Jonathan Mills, jazz legend Gunther Schuller and theatre director Anthony Neilson about Caledonia, a new play from the National Theatre of Scotland about the disaster of Scotland's attempt to colonise the Isthmus of Panama. He also looks at some of the other musical and theatrical offerings in Edinburgh, including the UK premiere of Montezuma, an 18th century opera about the Spanish Conquistadores and their battle with the Aztec Empire. E-mail: [email protected].