Trumpet/ˈtrʌmpɪt/ Definition 1 of 3Pro Tip 1/3Brass Instrument Remember, the trumpet is made of brass and part of the brass family of instruments. I want to learn a brass instrument, maybe the trumpet. Pro Tip 2/3Sound Projection Trumpets are loud and often lead the melody in bands due to their clear, penetrating sound. The trumpet's sound soared above the orchestra. Pro Tip 3/3Genre Flexibility Trumpets are used in many music genres, from classical to jazz to pop. The jazz band's trumpeter played an amazing solo.