All just my personal opinion
Concert review, Reto Knöpfel, Leticia Kahraman, Andrea Wiesli @ ETH Zurich, 2017-12-19 — Christmas Concert “Bei Menschen, welche Liebe fühlen”: Lied and aria duets by Robert Schumann, Johannes Brahms, Felix Mendelssohn Bartholdy, Wolfgang Amadeus Mozart, Antonín Dvořák, Gioacchino Rossini, and Franz Lehár
Concert review, Isabel Villanueva (viola) & François Dumont (piano) @ Semper-Aula, ETH Zurich, 2017-11-21 — Brahms: Sonata No.2 in E♭ major, op.120/2; Dowland: “Flow my Tears”; Britten: Lachrymae, op.48a (Reflection about a song by J. Dowland); Franck: Sonata in A major, FWV 8
Concert review: Christoph Croisé (cello), Oliver Schnyder & Meta Fajdiga (piano) in Arosa/CH, 2016-02-25 — Schubert, Piano Sonata in C minor D.958 & Fantasia in F minor, D.940; Rachmaninoff: Cello Sonata in G minor, op.19
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)
Beethoven: Piano Sonata No.26 in E♭ major, op.81a, “Les Adieux” — comparing recordings with the following artists: Wilhelm Backhaus (1961), Paul Badura-Skoda (1969), Daniel Barenboim (1984), Ronald Brautigam (2007), Emil Gilels (1984), Friedrich Gulda (1967), Arthur Rubinstein (1940 and 1962), Artur Schnabel (1935)
Comparing recordings with the following artists: Wilhelm Backhaus (1966), Paul Badura-Skoda (1969), Daniel Barenboim (1984), Ronald Brautigam (2008), Emil Gilels (1985), Friedrich Gulda (1967), Igor Levit (2013), Maurizio Pollini (1976), Svjatoslav Richter (1965), Artur Schnabel (1935)