The In Tune A-Z of Opera. Today's letter is P for Production. Our guides are Graham Vick, Alex Wilson, Ed Gardner and John Mark Ainsley. For details of the music used in today's podcast please visit the In Tune playlist pages http://www.bbc.co.uk/programmes/b00smv4d

The In Tune A-Z of Opera. Today's letter is O for Operetta. Our guides are Sarah Lenton and Andrew Lamb. For details of the music used in today's podcast please visit the In Tune playlist pages http://www.bbc.co.uk/programmes/b00smty5

The In Tune A-Z of Opera. Today's letter is N for Nationalism. Our guides are Edward Gardner, Alex Wilson and Sarah Lenton. For details of the music used in today's podcast please visit the In Tune playlist pages http://www.bbc.co.uk/programmes/b00smq1z

The In Tune A-Z of Opera. Today's letter is M for Mad scene. Our guides are Joyce DiDonato, Gerald Martin Moore, Mary King and Adrian Mourby. For details of the music used in today's podcast please visit the In Tune playlist pages http://www.bbc.co.uk/programmes/b00skc9f

The In Tune A-Z of Opera. Today's letter is L for Libretto. Our guides are Sarah Lenton, Graham Vick and David Pountney. For details of the music used in today's podcast please visit the In Tune playlist pages http://www.bbc.co.uk/programmes/b00skc6d

The In Tune A-Z of Opera. Today's letter is K for Kings. Our guides are David Pountney and Adrian Mourby. For details of the music used in today's podcast please visit the In Tune playlist pages http://www.bbc.co.uk/programmes/b00skbvc

The In Tune A-Z of Opera. Today's letter is J for Jealousy. Our guides are Graham Vick, Joyce Didonato and Sir Mark Elder. For details of the music used in today's podcast please visit the In Tune playlist pages http://www.bbc.co.uk/programmes/b00skbvc

The In Tune A-Z of Opera. Today's letter is H - for Heroes and Heroines. Our guides are Catherine Malfitano, Sarah Lenton and Adrian Mourby. For details of the music used in today's podcast please visit the In Tune playlist pages http://www.bbc.co.uk/programmes/b00sgz0q

The In Tune A-Z of Opera. Today's letter is G - for Gesamtkunstwerk. Our guides are Graham Vick, Sir Mark Elder, Ed Gardner and John Mark Ainsley.