Which mute would a player use to soften the tone without changing pitch?

• A. Harmon Mute
• B. Straight Mute
• C. Cup Mute
• D. Bell Mute

Answer: (C)

The key idea is how different mutes alter tone versus pitch on brass instruments. A cup mute sits inside the bell and dampens the air column, producing a softer, muffled sound while keeping the fundamental pitch stable. That combination—lower volume with minimal change to pitch—is exactly what you want when you aim for a softer tone without detuning, so this mute is the best choice.

Other mutes change the color of the sound more noticeably and can affect intonation. The Harmon mute adds a distinctive, intimate timbre and can alter perceived pitch; the straight mute changes the tone toward a brighter, more focused color and can introduce slight pitch quirks; the bell mute reduces volume but also shifts tone color in a way that isn’t as neutral to pitch.