SG GuitarsThe Gibson SG is one of the most distinctive and popular solidbody electric guitar designs to have come out of the last half century. In fact, Gibson recently proclaimed the SG Standard to be its best-selling guitar ever! Since its introduction in 1961, the double-cutaway electric guitar has been played by all the guitar greats. The most striking feature of the SG guitar is the double cutaway body. This allows easier access to the upper frets.