Business Unlike Usual
Some well-known names in unfamiliar contexts: Dinu Lipatti and Otto Klemperer as composers (Concertino and Merry waltz), Verdi's single excursion into instrumental music with his string quartet (played in the string orchestral version), Wagner's A flat Album Sonata, and Bruno Walter as accompanist to Kathleen Ferrier.
Unlikely record requests from the under-20s, made plausible by Christopher Hogwood.