Sarah's guest today is the conductor, violinist and keyboard player Roy Goodman. Roy was closely associated with the historically informed performance movement from the 1970s onwards. He will discuss the advantages of performing Mozart's music on the instruments for which they were originally composed, and the way the style of Mozart playing has developed over the last 35 years. Music highlights include: Missa brevis, K49 Leipzig Radio Chorus and Orchestra, Herbert Kegel (conductor) Violin Sonata in B flat, K31 Rachel Podger (violin), Gary Cooper (fortepiano) Mass in C minor, K139 (Waisenhausmesse) Susanne Mentzer (mezzo soprano), Bernadette Manca di Nissa (contralto), Neil Mackie (tenor), Stephen Roberts (bass), Choir of King's College, Cambridge, English Chamber Orchestra, Stephen Cleobury (conductor) Serenade in E flat, K375 Ensemble Zefiro Symphony No 1 in E flat, K16 Academy of Ancient Music, Christopher Hogwood (conductor).