All just my personal opinion
Concert review, Baldur Brönnimann / Basel Sinfonietta / OnStage smartphone app @ Musical Theater, Basel, 2018-09-16 — Crumb (1929 – 2022): A Haunted Landscape (1985); Furrer (*1954): Nero su nero (2018); Birtwistle (1934 – 2022): Earth Dances (1986)
Concert review, Kaleidoscope String Quartet, Baldur Brönnimann, Basel Sinfonietta @ Basel, 2018-06-10 — Mason Bates: Mothership (2011); Simon Heggendorn: Simply that (2018) & Cascades (2018); Missy Mazzoli: River Rouge Transfiguration (2013); Heggendorn: Lava (2018); Philip Glass: Dance from “Akhnaten” (1984); Heggendorn: Choral (2014) & Horizons (2018)
Concert review, Marius Neset, Ivo Neame, Frans Petter Eldh, Anton Eger, Geoffrey Paterson / Basel Sinfonietta @ Volkshaus Basel, 2018-05-06 — Jazz compositions and arrangements by Marius Neset (*1985): Arches of Nature, The Storm is Over, Old Poison (XL), Birds, Math of Mars, Snowmelt (2015)
Concert review, Musical Theater Basel, 2017-01-29: Baldur Brönnimann conducting the Basel Sinfonietta in Olivier Messiaen’s Turangalîla Symphony, with Kirill Zwegintsow (piano), Bruno Perrault (Ondes Martenot), and Ludovic van Hellemont (Celesta) as soloists
Concert review — Xmas Concert, Münster Basel, 2016-12-17: Annedore Neufeld, Basler Münsterkantorei, Basel Sinfonietta — Arthur Honegger: Une cantate de Noël, H.212; Charles Koechlin: Vers la voûte étoilée, op.129; Camille Saint-Saëns: Oratorio de Noël, op.12
Concert review — Basel Sinfonietta / Baldur Brönnimann, Volkshaus Basel, 2016-09-24: Jannik Giger (*1985): Came Adrift (2016); Toshio Hosokawa (*1955): Ferne Landschaft III—Seascapes of Fukuyama (1996); Andrew Norman (*1979): Unstuck (2008); Brett Dean (*1961): Amphitheatre—Scene for Orchestra (2000); Kevin Volans (*1949): Strip-Weave for Orchestra (2002/03); Arturo Márquez (*1950): Danzón No.2 (1994)