Here's a few samples I've made on different instruments over the years.
All done in real time - hope you like 'em!
Like 'em? ... I love 'em ...
The KB intsrument matters not, it's the vocal instrument that matters ...
And you could give a clinic on how to use a vocal harmonizer ...
Thanks, Dave ...
PS: I did think "All My Tomorrows" could have been a step higher ... BWDIK ...