"There are three kinds of pianists: Jewish pianists, homosexual pianists, and bad pianists." — Vladimir Horowitz
Let's test that maxim!
Horowitz himself was Jewish, of course. No doubt about that. And he was very likely homosexual... there is enough evidence out there to suggest it, but we will leave that for our non-existent colleagues at GayOrNotGay.com. Still, he checks the Jewish box, so no need to explore further.
Feel free to play along, but here are some famous pianists:
Arthur Rubinsein: Jewish
Emil Gilels: Jewish
Benjamin Britten: Gay
Billy Joel: Jewish
Michael Feinstein: Jewish
Liberace: Gay
Martha Argerich: Jewish
Myra Hess: Jewish
Van Cliburn: Gay
Vladimir Ashkenazy: Jewish
Marvin Hamlisch: Jewish
Elton John: Gay
Artur Schnabel: Jewish
Leonard Bernstein: Jewish and gay
So, if you play the piano, and you're not Jewish, and you're not gay...
Good luck?