Any thoughts on the composer Charles-Valentin Alkan? I had never heard of him, until I read a piece about him in the March 2019 issue of BBC Music magazine. It painted an intriguing portrait of a composer who "wrote the most demanding piano works in history." "Wide, rapid, switchback leaps up and down the keyboard are a specialty; figuration hurtling along unbroken at full-tilt for demandingly long periods is another, plus use of an unusual lateral stretch between the fingers." Indeed, the article seemed to imply that the reason Alkan's music is not more well-known is because pianists are reluctant to play such technically-difficult music.
Intrigued, I bought the 13-disc "Alkan Edition" on Brilliant Classics, to listen for myself. I've finished the first 3 CDs (all performed by the unfortunately-named Vincenzo Maltempo). So far, it sounds to me like the classical version of Oscar Peterson: yes, huge, long, demanding runs, almost like hearing an entire orchestra from one piano, but not a lot of emotional depth.
What are your impressions of Alkan's music?