All just my personal opinion
Blog post #467 — Concert review, ★★★, Piano Recital Alina Bercu @ Wetzikon ZH, 2019-02-01 (Klavierissimo Festival 2019) — Beethoven: Piano Sonata No.4 in E♭ major, op.7 & Piano Sonata No.5 in C minor, op.10/1; Chopin: Nocturne No.7 in C♯ minor, op.27/1, CT 114 & Nocturne No.8 in D♭ major, op.27/2, CT 115; Rachmaninoff: 6 Moments Musicaux, op.16
#rolfsmblog
Concert review, ETH Zurich / Semper-Aula, 2016-11-15: Piano Recital, Winners of the Rahn Competition 2016 — Benedek Horváth (Schumann: Davidsbündlertänze op.6; Bartók: Piano Sonata, Sz.80 / BB 88) — Alexandra Sikorskaya (Medtner: Sonata-reminiscenza in A minor, op.38/1; Chopin: Scherzo No.4 in E major, op.54; Chopin: Andante spianato et grande polonaise brillante, op.22)
Concert review: Piano recital Pietro De Maria, ETH Zurich / Semper-Aula, 2016-10-25: piano works by Chopin (Mazurki op.7/3, op.23/2, op.63/3; Ballade op.23; Nocturne op.27/2; Scherzo op.31) — Ligeti (Etudes Nos.8, 5, 13) — Liszt (Valse-Caprice No.6, Sonetto 104 del Petrarca, Etude No.3 “La Campanella”)
Concert review: Piano recital Olga Scheps at Zurich Tonhalle (2016-03-08), playing Tchaikovsky (Les Saisons, op.37a/37b), Rachmaninoff (Corelli Variations in D minor, op.42), Prokofiev (Piano Sonata No.7 in B♭ major, op.83)
(…) Yulianna at that time had just finished her concert diploma and had since become Prof. Scherbakov’s assistant (which presumably consists of filling in for him when he was away for concerts or for a recording session). This is now 3 years ago, and she has evolved as a pianist quite dramatically since then…