Guitar-shaped instruments appear in stone bas-relief sculptures of the hittites in northern Syria and Asia Minor from as far back as 1350 B.C.
The word guitar also has origins in the middle and far east, deriving from gut, is the Arabic word for four, and tar, the Sanskrit word for string. The earliest European guitars did have four courses of gut strings. A
course is a pair of strings tuned in unison. These early guitars were distinguished from lutes by body sides that curved inward to form a waist and by four courses of strings. Some but not all early guitars had a flat back, while lutes always had a flat back. In the Middle Ages and the Renaissance the lute was the dominant fretted instrument. The lute with was pear-shaped and had five or more courses of strings was generally regarded as a higher class of instrument. By 1546 the guitar had gained enough popularity to merit the publication of a book of guitar music. By this time guitars had added another course, and modern tuning had come into existence. Chord positions were the same as they are today. The frets of the early guitars were made of gut and tied around the neck. This made placement of frets very difficult. The early guitars were also much shorter in length than today's guitars.
The second most popular instrument during the Middle ages was the cittern. It was more like the modern guitar than any other during that time. It had metal strings, fixed frets, a fingerboard that extended onto the top, a flat back, and a movable bridge with strings anchored by a tailpiece; and it was played with a quill or plectrum(pick). But this modern instrument soon lost its popularity and disappeared by the late 1600¹s. Through the 1600¹s and 1700¹s the guitar design changed very little, although interest increased around luthiers.
In the 1770¹s the first guitars with six single strings appeared,
blowing the evolutionary lid off the instrument. Within the next few decades, numerous innovations followed: body waists became narrower and body bouts changed shape, becoming circular in northern Europe and more oval shaped in southern Europe. Inlaid frets of brass or ivory replaced the tied on gut frets and the neck was extended one full octave(12 frets) clear of the body. Metal tuners with machine heads began to replace friction pegs, and strings were anchored by bridge pins, replacing the method of tying strings to the bridge. By the 1820¹s most of the fingerboard extended all the way to the soundhole. As rapidly as the guitar changed so did it¹s acceptance. By the 1800¹s the Lute had all but disappeared.
One of the best known makers of this new-style of guitar was Johann Georg...