Claudio Arrau     Schumann: Piano Concerto in A minor (George Hurst/LSO)   8/6/63, Studio, London (BBC)   Schumann: Carnival Op.9   19/6/61, Studio, London (BBC)   Beethoven: Sonata Op. 111 in C minor, No. 32   1970, Studio, Paris (INA)   Bonus:       Solomon performs Beethoven: Appassionata Sonata   15/1/56, Studio, London (BBC)