The trumpet is one of the most popular instruments in general when talking about brass instruments.  The B flat trumpet is the most common trumpet.  However, some trumpet players also own a C trumpet.

The trumpet is constructed of brass and has many spirals.  A sound is produced on the trumpet by blowing air through closed lips and pushing air through the lips and creating a vibrating buzzing sound with the lips.  Different notes can be produced on the trumpet by tightening or loosening the lips, which is referred to as the embouchure.  Modern trumpets have three piston valves, each of which increases the length of the tubing when pressed down, which in turn lowers the pitch of the sound coming from the trumpet.  The first valve lowers the trumpet pitch by a whole step.  The second valve lowers the trumpet pitch by a HALF step.  The third valve when pressed down lowers the trumpet pitch by one-and-a-half steps.