This week's Thursday Opera Matinee (concluding on Friday) is Wagner's seminal music drama Tristan und Isolde, an epic tale of love steeped in Schopenhauerian philosophy. This specially recorded performance was given last December at the Vienna State Opera, conducted by Sir Simon Rattle. Katie Derham then continues her celebration of Schumann's 200th anniverary. Wagner: Tristan und Isolde - Acts 1 and 2 Tristan ...... Robert Dean Smith (tenor) Isolde ...... Violetta Urmana (soprano) Brangane ...... Yvonne Naef (mezzo-soprano) Kurwenal ....... Bo Skovhus (baritone) King Marke ...... Franz-Josef Selig (bass) Melot ...... Clemens Unterreiner (tenor) Vienna State Opera Chorus and Orchestra Conductor: Sir Simon Rattle (Act 3 tomorrow at 2pm) 4.30pm Schumann: Konzertstuck in F for Four Horns and Orchestra Radovan Vlatkovic, Zora Slokar, Ricardo Serrano, Simone Baroncini (horn) Orchestra della Svizzera Italiana Conductor: Alexander Vedernikov.