All just my personal opinion
Concert Review: Igor Karško (viola) and the Camerata Zurich at the Tonhalle Zurich, playing compositions by Rossini (String Sonata No.1), Beethoven (Eyeglasses Duet), Wolfgang Rihm (Erscheinung), and Franz Schubert (String Quartet No.15 in G major, D.887)
Franz Schubert, String Quartet No.15 in G major, D.887 (op.116): a comparison of 3 recordings, with the Melos Quartett Stuttgart (1978), the Emerson String Quartet (1998), and the Artemis Quartet (2009)
Duo recital with Christoph Croisé and Oxana Shevchenko, Tonhalle Zurich, 2015-11-07 — Béla Bartók: Rhapsody No.1 for cello and piano, Sz.88 / BB 94; Claude Debussy: Cello Sonata in D minor (1915); Franz Schubert: Arpeggione Sonata in A minor, D.821; Alberto Ginastera: Pampeana No.2 — Rhapsodie for cello and piano
Piano Recital by Teo Gheorghiu: Beethoven (32 Variations in C minor, WoO 80) / Schubert (4 Impromptus, D.899), Rachmaninoff (8 Études-Tableaux, op.33), Balakirev (Oriental Fantasy “Islamey”)
Franz Schubert’s Four Impromptus op.90 (D.899), in interpretations by Arthur Rubinstein (1928, 1949, 1950, 1958, 1961) and Andr?s Schiff (1990)
Piano recital by Stephen Kovacevich in Baden / Switzerland, 2015-09-18, featuring Alban Berg’s Piano Sonata in B minor, op.1, and Franz Schubert’s last two Piano Sonatas, the Sonata in A major (D.959), and the Sonata in B? major (D.960)