While some great pianists play the core works we've heard countless times, Marc Andre-Hamelin has an affinity for those lesser-heard gems. On his recording of Busoni's epic Piano Concerto, Op. 38, the pianist revealed abilities that couldn't be overshadowed by the complex composition at hand.
It may be rash to claim that the French pianist Monique Haas (1909-1987) never made a bad recording, but you won't find one among her complete DG sessions. Dating from the late 1940s up to 1965, the recordings have been transferred from scratch, and they sound remarkably well for their respective vintages. The repertoire is diverse and unhackneyed, ranging from Mozart piano duets (with Heinz Schröter) and K. 449 and K. 488 concertos, rare Haydn gems (the E-flat Arietta with Variations and the Fantasia in C major), and the Stravinsky Capriccio, to Hindemith's Concert Music for piano, brass and harps (with the composer conducting), and a substantial sonata by Marcel Mihalovici (the pianist's husband) featuring violinist Max Rostal.