[HerbMcM]

A lifetime of practice on the wrong size leads to injury and the disappointment that maybe you as a pianist just will never get to play more technical pieces. Both are wrong.

Pianists for alternatively sized keyboards https://paskpiano.org/latest-news/ Videos showing alternative sizes: https://youtu.be/TfdNxbHl_40?list=PLHBn-VaaOCGcfrUsklI1GztxT...

[jojobas]

Just a note: Myra Hess had "tiny" hands and played full size pianos beautifully.

As the video says, it's always more about the ability to stretch than size.

When you go for narrower keys for inability to stretch you lose fluency as your fingers are as thick as the other guy's.

[interglossa]

Josef Hofmann and Daniel Barenboim played pianos with smaller keys.