 As with brass instruments, changes in pitch are controlled by altering lip tension, and an accomplished jug player could have a two-octave range.The stovepipe (usually a section of tin pipe, three of four inches in diameter) is played in much the same manner, with the pipe rather than the jug serving as the resonating chamber.There is some similarity to the didgeridoo, but there is no contact between the stovepipe and the player's lips.