Why is plural of piano pianos but potato potatoes?

Answer 1

Since Piano is a foreign word, when it is plural, the word must add a 's' to the end. Like the word Eskimo, you just add a 's' to the end of it to make it plural.

Answer 2

Only because 'piano' is an abbreviated form of the instruments correct title, the correct name is is 'Pianoforte'

Answer 3

"Strawberries", "bicycles", "alveolae", and "neuroses" were already taken.

Answer 4

The plural of piano is pianos.