His big, baggy bell peeping out from behind the shoulder of the musician, you can see in military parades or on TV, when a brass band, cadence plays a brisk March, or during the meeting the guests of honor takes part in the ceremony.
Helicon is the lowest sounding brass instrument, is used only in brass bands. Sound it corresponds to the tube (you can read about it on page 148) and in the Symphony orchestra is not needed. And the tube of Helicon (the name derives from the Greek helix is twisted, bent) is collapsed so that it can be put on: put in the hole between the coils of the head and right arm, musician, therefore, hangs it on the left shoulder. Play and standing in military formation, and on the March, and even on horseback.
Musicians playing on the helicons