Andreas Haefliger’s concept of replicating his recital programmes on record has been a critical and commercial success. The fourth instalment in the Perspectives series juxtaposes Beethoven with works that are inspired and influenced by that composer’s great corpus of piano sonatas. The idiosyncratic Op. 78 and the celebrated Waldstein Sonata, a boundary-breaking work when it was composed in 1804, rub shoulders with Brahms’ early and impulsive Sonata No. 2. The programme provocatively opens with Janácek’s Sonata, “From the Street”, which, in Haefliger’s words “takes you into worlds of tragedy, metaphysical thought, a world of death, of serenity”.