Guitar has been around for a long time. According to author Maurice J. Summerfield , the Romans introduced a musical instrument called the "sithara" to Spain in 400 AD , from which the guitar originated. The Arabs used a musical instrument called "Ud". However, many believe that the guitar originated from the four-stringed instrument called the "tanbur". In the 1400s BC, there was a people living in present-day Syria called the "hithit" who played the "tanbur" . The Greeks also made a musical instrument from which the Romans later made a musical instrument called "Sithara". Guitar originated from "Tanbur" , " Ud" and "Sithara". In 1200, two variants of the four-stringed guitar came out , one of which was the "Moorish guitar". The back of which was round , a little less wide fretboard and had several sound holes. The other is - "Latin guitar". Which had a sound hole and a wide fretboard. At the age of 18, Jacob Otto, a German musical instrument maker, added the 6th string to his famous guitar, which later became popular. Then, in the early 19th century, Augustine Caro of Spain , manual guitarist and other European guitar makers gave the present form to the guitar , which is now used by all.