Electric mandolin 4-string version. A related instrument, the Bahian guitar, was developed in Brazil beginning in the 1940s. Bahian guitars typically have a solid body and 4 or 5 single-course strings tuned in fifths, but are considered to be electric versions of the cavaquinho rather than the mandolin. Both four string single course and eight string double course solid body mandolins have been produced by several makers, as well as five string single course models. From 1956 to 1976, Fender produced a four string version which they simply called the "Fender Electric Mandolin". Its body shape was based on a smaller version
Mandolin built mandolins included Raffaele Calace (1863 onwards) in Naples, Luigi Embergher (1856–1943) in Rome and Arpino, the Ferrari family (1716 onwards, also originally mandolino makers) in Rome, and De Santi (1834–1916) in Rome. The Neapolitan style of mandolin construction was adopted and developed by others, notably in Rome, giving two distinct but similar types of mandolin – Neapolitan and Roman. The transition from the mandolino to the mandolin began around 1744 with the designing of the metal-string mandolin by the Vinaccia family, 3 brass strings and one of gut, using friction tuning pegs on a fingerboard that sat "flush" with