WONDER #1142: Why Do Pianos Have 88 Keys?

Question 1 of 3

What major piano manufacturer moved to 88 keys in the late 19<sup>th</sup> century, leading many other piano manufacturers to do the same?

  1. Steinway
  2. Stuart and Sons
  3. Boesendorf
  4. Casio

Question 2 of 3

The Stuart and Sons “super” grand piano has how many extra keys?

  1. 60
  2. 14
  3. 88
  4. 102

Question 3 of 3

The black keys on a piano represent what compared to the white keys?

  1. sharps
  2. flats
  3. half steps
  4. all of the above

Check your answers online at https://wonderopolis.org/wonder/why-do-pianos-have-88-keys.