Keyboard percussion - Definition

The following instruments are collectively known as tuned percussion or keyboard percussion, or sometimes, mallet percussion.

• marimba
• xylophone
• vibraphone
• tubular bells
• crotales
• metallophone

Despite the name, tuned percussion is rarely tuned since it is a difficult and expensive operation involving adding or removing materials from the instruments. Other percussion instruments are also tuned but are not usually referred to as tuned percussion. These include

• timpani
• rototoms
• celesta

Strictly speaking, the piano is also a tuned percussion instrument.