Which instrument is described as notated on the grand staff and sounding an octave higher?

• A. Celesta
• B. Glockenspiel
• C. Xylophone
• D. Euphonium

Answer: (A)

Keyboard instruments that use the grand staff are often written in one way for readability, while the actual sounding pitch may sit higher or lower than what you see. The celesta is such an instrument: it is played from a keyboard (like piano) and is notated on the grand staff, but it sounds an octave higher than what is written. That octave-transposition keeps the music within a comfortable staff range while delivering that bright, bell-like timbre.

The other options don’t fit this combination. The glockenspiel and xylophone are percussion instruments that are typically written in treble clef for single-staff notation, and they aren’t described as sounding an octave higher than written. The euphonium is a brass instrument notated for concert pitch in its own transposition (and not on the grand staff like keyboard parts).