I found a date only for the chinrest, invented by Louis Spohr around 1820. It was not until the end of the 19th century that the viola gained the same status as the violin. The first violin was made by Andrea Amati , although many people contributed. As such, the violin with its current characteristic forms, appeared before the public in the second half of the sixteenth century. The violin was early recognized for its singing tone, especially in Italy, its birthplace, where the earliest makers—Gasparo da Salò, Andrea Amati, and Giovanni Paolo Maggini—had settled its average proportions before the end of the 16th century.During its history the violin has been subject to modifications that have progressively adapted it to its evolving musical functions. The great difficulty was to find the perfect balance between size and ease of playing, as is shown by several attempts to improve the instrument’s construction which led to the development of various different types of viola in the first half of the 20th century. The violin bow changed dramatically in around 1786, when Françoise Xavier Tourte invented the modern violin bow by changing the bend to arch backwards and standardising the length and weight. The violin fingerboard was lengthened in the 19 th century, to enable the violinist to be able to play the highest notes. The violin G-string was often wound with silver while the other strings were just plain gut. When compared to a mandolin, there is a suspicion that the violin will be derived from it, which also has two flat tops such as the guitar and with the curved back. Absolute equality. While the question ‘when was the violin invented’ doesn’t appear to have a clear answer, it is still evident that the tradition of this musical instrument was first established by Andrea Amati. This happened in Italy. When was the violin invented? The first violins were used in the beginning of the 16th century. This would raise the density of the G-string allowing it to be smaller in diameter, and create a more projection. Following wound G-strings the creation of the steel E-string grew in popularity in the late 19th century. ANSWER 0 BabyRoo ANSWERS: 1. The first time violins are mentioned in a written document was in 1523. Evolution of the violin through the centuries.

Nick. – guidot Dec 26 '16 at 16:35 As far as I know actual shoulder rests as such appeared in the first half of the 20th century - but haven't found any particular date.