Although nearly half of Bachs 1,100 surviving compositions, arrangements, and transcriptions are instrumental works, only about 4% are sonatas.The term sonata is also applied to the series of over 500 works for harpsichord solo, or sometimes for other keyboard instruments, by Domenico Scarlatti, originally published under the name Essercizi per il gravicembalo (Exercises for the Harpsichord). Most of these pieces are in one binary-form movement only, with two parts that are in the same tempo and use the same thematic material, though occasionally there will be changes in tempo within the sections. They are frequently virtuosic, and use more distant harmonic transitions and modulations than were common for other works of the time. They were admired for their great variety and invention. Both the solo and trio sonatas of Vivaldi show parallels with the concerti he was writing at the same time. He composed over 70 sonatas, the great majority of which are of the solo type; most of the rest are trio sonatas, and a very small number are of the multivoice type.The sonatas of Domenico Paradies are mild and elongated works with a graceful and melodious little second movement included. Classical period
The practice of the Classical period would become decisive for the sonata; the term moved from being one of many terms indicating genres or forms, to designating the fundamental form of organization for large-scale works. This evolution stretched over fifty years.
Signs and symptoms
Signs and symptoms of familial dysautonomia usually commence during infancy and worsen with age, and may include: gastrointestinal dysmotility (including erratic gastric emptying, gastroesophageal reflux, abnormal esophageal peristalsis, oropharyngeal incoordination), dysphagia (as poor suckling in infancy) and frequent choking/gagging, recurrent vomiting, poor weight gain/growth, delayed development (especially walking) and puberty (especially in girls), recurrent aspiration pneumonia (due to inhalation of food or vomitus) with possible secondary chronic lung disease, absence of overflow tears during crying, corneal ulcers, red skin blotches and excessive sweating (often during eating or excitement), breath-holding spells, slurred speech/nasal voice, tongue ulcers (from accidental self-injuries), hyporeflexia (variable absence of deep tendon reflexes), hypotonia, enuresis, arrhythmias, hypertension (including episodic hypertension in response to emotional stress or visceral pain), hypotension (including orthostatic hypertension with compensatory tachycardia (invariably present)), impaired (but not absent) temperature and pain perception (leading to frequent accidental injury), impaired proprioception, a smooth glossy tongue, scoliosis (with possibly secondary restrictive lung disease), abnormal gait, short stature, chronic renal failure (common), visual impairment, variable cognitive ability, characteristic facial features that develop with time, impaired vibration perception, lack of fungiform papilla of the tongue, and impaired taste perception (especially for sweetness). Autonomic crises - In children with FD, recurrent episodes of vomiting may occur. Such episodes may be triggered by physical (e.g. infection) or emotional stress, may occur every 15–20 minutes for over 24 hours, and may be accompanied with: significant hypertension, drenching sweat, breathing issues, fever, tachycardia, aspiration pneumonia, skin blotches, drooling, and negative personality change.