What is the highest note that a trumpet can play?

The highest note that a trumpet can typically play is D6. This note is commonly within the range for advanced trumpet players, particularly those performing on a B♭ trumpet, which is the most standard type. D6 sits just above the fourth octave and is accessible to skilled trumpeters who can utilize proper technique, including breath support and embouchure control. The note requires significant control and technique to produce clearly, and it's important in many advanced-level pieces and various genres of music.

While other notes, such as C6 or B5, may also be played, they are generally lower in pitch than the D6, making them less indicative of the upper range capabilities of the instrument. D7, meanwhile, is typically beyond the standard range for most trumpeters and is not generally considered a practical note for performance in many contexts. This distinction signifies the D6 as a benchmark for the highest notes achievable on most trumpets in a performance environment.