The bombards are par excellence the traditional breton instruments. They are part of the oboe familly. Before the creation of the bagadoù, the traditionnal ringers of low-Brittany played in couple : bombarde and biniou bihan (small bagpipe) or in trio: bombarde-biniou-drum.
The most used bombardes are in Bflat, but the ringers from Quimper also use some bombardes in Eflat; this instrument is also called lombarde, it has 8 keys and has been very recently introduced in the bagadoù.
The ringer of bombarde blows in a double reed . The way to pluck the reed has a great importance for the quality of the sound given out.
The bombarb chapter of the Kemper Bagad is composed of twelve to sixtheen musicians. The bagad also uses a wind instrument called "treujenn gaol" (a sort of clarinet). This instrument is used in some regions of Low-Brittany (Montagne, Fisel, Plinn...).
To perform turn from these regions, one the musician plays of this instrument.