Double reed of double reeds for the oboe family of instruments is similar in principle: like the bassoon's reeds, they consist of two pieces of "Arundo donax" cane fastened together with an opening at the tip. However, because the oboe does not have a bocal, the cane must be fastened to a metal tube (the staple), the lower half of which is normally surrounded by a piece of cork. The staple is then inserted into the farrow at the upper end of the oboe. There are many different methods of making reeds and many variations of design have been developed. Players can
Oboe In "The Oboe", Geoffrey Burgess and Bruce Haynes write "The differences are most clearly marked in the middle register, which is reedier and more pungent, and the upper register, which is richer in harmonics on the Viennese oboe". Guntram Wolf describes them: "From the concept of the bore, the Viennese oboe is the last representative of the historical oboes, adapted for the louder, larger orchestra, and fitted with an extensive mechanism. Its great advantage is the ease of speaking, even in the lowest register. It can be played very expressively and blends well with other instruments." The Viennese oboe is,