The Contrabassoon is the low sound of woodwind instruments. This kind of faggot, he has the same device, but the pipe is wider, and therefore the column of air in it two times larger than the bassoon.
The Contrabassoon is very similar to the bassoon timbre. The sound of his full, slightly hoarse, darker than the bassoon. The range compared with the bassoon is shifted an octave down from b-flat to subcontracts to salt small octave. It is applied usually to enhance the bass voices of the orchestra.
The Contrabassoon was constructed in the late XVII - early XVIII century. In the nineteenth century it was improved. It was then that he was often used in the Symphony orchestra in addition to the two or three bassoons. First separate party for Contrabassoon wrote Beethoven's Fifth Symphony.