Avena. (L.) An oaten straw. This reed, as supposed, was the third kind of musical instrument used by the ancients, and succeeded that formed of the horns of quadrupeds. The first was a shell : so simple was the origin of music ! To such artless beginnings do we trace its counterpoint, fugue, double fugue, pealing choruses, melting airs, exalting grandeur, thrilling sweetness, and all its magic power over our passions.