The excess mucus production that triggers postnasal drip has a number of possible causes, including: 1  Colds. 2  Flu. 3  Allergies (called allergic postnasal drip). 4  Sinus infection or sinusitis (inflammation of the sinuses). 5  Object stuck in the nose (more common in children).
1. classical music-traditional genre of music conforming to an established form and appealing to critical interest and developed musical taste. classical, serious music. chamber music-serious music performed by a small group of musicians.
Spanning seventy years, the classical period is a time when composers began pulling in the reigns of the many baroque period musical styles by creating strict compositional rules and regulations.. Yet within their rigidity, great composers like Haydn and Mozart were able to create some of the greatest classical music the world has ever known.