All just my personal opinion
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: Francisco Fullana, Giulia Ott, Eldar Separayev / Lyra Festival Orchestra @ Auditorium maximum, ETH Zurich, 2017-05-09 — Mozart: Divertimento in D, K.136; Bach: Violin concerto in E, BWV 1042; Debussy: Deux danses pour harpe et cordes, CD 113 / L.103; Britten: Simple Symphony, op.4
My first reaction in writing this short review was to use a title such as “Bach’s Christmas Oratorio — How Not To” — but let me start properly: This year’s Christmas concert in the Tonhalle Zurich (on Friday, 2014-12-19) was given by the Zürcher Sing-Akademie (Zurich Singing Academy), the professional choir, founded in 2011, following the footsteps of the Schweizer Kammerchor (Swiss Chamber Choir)…