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.
1 of, relating to, or denoting any music or its period of composition marked by stability of form, intellectualism, and restraint Compare romantic (sense 5) 2  accepted as a standard: the classical suite.  denoting serious art music in general Compare pop1 (sense 2)