Bartolomeo Cristofori - The Inventor of the Piano Have you ever wondered who the inventor of the piano was? The piano is such a popular instrument now, but have you ever stopped to think about who had the idea of creating it? Believe it or not, at one time if you wanted to play a keyboard instrument your choices were the harpsichord or the organ. While these instruments are great, they also have some drawbacks. The main one is this - no matter how hard or soft you press the keys, they don't play any louder or softer.