what sort of instrument is a piano
Best Answer: The piano is both a chordophone (an instrument where strings produce their sound by means of a resonating chamber) and a PERCUSSION instrument. The strings of a piano are hit with hammers. piano is a percussion instrument because the strings in the piano are struck by mallets inside, much like other percussion instruments like the timpani or vibraphone. Byrd1324 Â· 5 years ago. Thumbs up. 3. Thumbs down. 1. Comment. Add a comment. Submit.