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.
Main Points. 1. Chamber music is music for small ensembles with one player on each part. Although more than one instrument of the same type may be used (two violins, for example), the music each instrument plays is different. During the Classical period, chamber music was always instrumental music.