Reed (mouthpiece) a mandrel for bassoon reeds. Bassoon reeds are wrapped with nylon thread or cotton thread, depending on the musician's preference. Oboe reeds are most commonly tied with nylon thread. Finishing both bassoon and oboe reeds requires the reed-maker to scrape along the cane section of the reed with a scraping knife to specific dimensions and lengths depending on the reed style and the musician's preference. Bassoon and oboe reeds are finished when the reeds play in tune or can make a sufficient "crow"-like noise. Quadruple reed instruments have four reeds, two on top and two on bottom. Examples of this
Wiener oboe played very expressively and blends well with other instruments." The Viennese oboe is (with the Viennese horn) perhaps the most distinctive member of the Vienna Philharmonic instrumentarium. The oboe in use in Vienna in the early and mid-19th century was originally a design called the Koch/Sellner oboe. In 1825 Viennese oboist and teacher Joseph Sellner wrote an oboe tutor ("Theoretische-praktische Oboeschule"), which included an illustrated fingering chart. The oboe associated with these materials was produced by Stefan Koch (1772–1828). This instrument was very well regarded in central Europe. In addition to a modernized mechanism with up to 13 keys, the