Not really.Pashkuli wrote: Sat Jun 20, 2020 7:44 am I see, but that voicing above is a static demonstration of a wide stretch for two note interval. The rest of the fingers are pretty much stuck. You would never be able to play this in a song during performance.
That kind of stretching is quite commonly seen on jazz piano.
These are just random videos I could find in 2 minutes, that had proper camera angle.
28:56 --- 29:17 --- 29:47
05:40
The second guy has bigger hands, but for the first player (with smaller hands), sharp edges are probably essential in order to easily push the keys down.
That also works with sharp edges on black keys.