Viola da braccio
Viola da braccio is a term variously applied during the baroque period to instruments of the violin family, in distinction to the viola da gamba and the viol family to which the latter belongs. At first "da braccio" seems to encompass the entire violin family. Monteverdi's Orfeo designates an entire six-part string section "viole da brazzo", apparently including bass instruments held between the knees like the cello and bass violin. His Selva morale contains a piece calling for "due violini & 3 viole da brazzo ouero 3 Tronboni", reflecting a general shift in meaning towards the lower instruments. Eventually it came to be reserved for the alto member, the viola. A famous example is Bach's Sixth Brandenburg Concerto, combining two viole da braccio with two viole da gamba. The German word for viola, Bratsche, is a relic of this last use.
Differences from viola da gamba
The families of the viola da braccio and the viola da gamba differ in size and form, the string tuning as well as in the posture as well as in the bow position.History and development
Over the centuries of history in the violin and viola da gamba families, there had been a constant development into the present form of the modern instruments known to us as violins, violas and cellos. The double bass, however, developed from both the violone and the bass-viola da gamba.The first instruments of the viola da braccio family were built in Italy about 1530.
After an early form with three strings, a four-stringed version without string frets was developed with tuning in fifths. In this family, there were also different sizes and tunings, with different names based on pitch. There were soprano, alto, tenor and bass viola da braccio.
The alto viola da braccio's tuning is comparable to today's viola. The tuning for this alto viola da braccio was first recorded in the 16th century first but was later tuned lower and is now the same tuning as modern violas. The tenor viola da braccio’s tuning was first tuned a minor third higher and later tuned lower and is now comparable to tenor violin’s tuning. The soprano viola's tuning corresponded to today's violin, and the bass viola's tuning is the same as a modern-day cello's tuning.