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.
In the broadest sense, contemporary music is any music being written in the present day. In the context of classical music the term is informally applied to music written in the last half century or so, particularly works post-1960. Standard reference works do not consistently follow this definition since it is a word that describes a movable time frame, rather than a particular style or unifying idea.