The brass family has four members, the [?], the [?], the [?] and the [?]. All the instruments except the trombone use [?] to change the pitch and produce different notes. The trombone uses a [?] instead. Brass players change the sound of the instrument by using a [?]. To make a sound in with a brass instrument, the players blows air through the [?]. As the air passes throught the mouthpiece the players lips .