Mandolin-banjo
The mandolin-banjo is a hybrid instrument, combining a banjo body with the neck and tuning of a mandolin. It is a soprano banjo. It has been independently invented in more than one country, variously being called mandolin-banjo, 'banjo-mandolin, banjolin and banjourine in English-speaking countries, banjoline and bandoline' in France, and the Cümbüş in Turkey.
The instrument has the same scale length as a mandolin ; with 4 courses of strings tuned identically to the violin and mandolin. The movable bridge stands on a resonant banjo-like head typically 10 inches in diameter and currently usually made of plastic. Originally heads were made of skin and varied in diameter to as small as five inches. Larger heads were favored, however, as they were louder, and thus more audible in band settings.
Origins
Inventors were experimenting to create amplified instruments in the days before electric amplification. The first patent for a mandolin-banjo was taken out in 1882 by Benjamin Bradbury of Brooklyn. The name banjolin was first patented by John Farris in 1885. The instrument was popularized prior to the 1920s, when the tenor banjo became more popular. In the heyday of mandolin orchestras and banjo bands, all sorts of instruments were produced. The mandolin-banjo is one of the hybrids that resulted. It enabled mandolinists to produce a banjo sound without having to learn that instrument's fingerings. The instrument adds the banjo's volume to the mandolin.Distinctions
Banjolin versus banjo-mandolin
The banjolin is different from the banjo-mandolin in the number of strings that it has. Banjolins today are supposed to have four strings instead of 8 strings. However, that distinction is not universal; John Farris patented an instrument with 8 strings calling it a banjolin by name in 1885. The Farris banjolin was offered in soprano, alto, tenor, and bass models. However, he "converted it to a four-string instrument," maintaining the mandolin and violin scale length and tuning.Banjo hybrids normally take their names from the Banjo- prefix, and then the second half of the other instrument's name, such as banjocello, banjo guitar, and banjo ukulele which implies the banjolin is a sort of mandolin/banjo hybrid. In the advertisement, Farris did not mention where the name came from, but did say that it was "fingered like the violin."
In the United States, the term "melody banjo" was often used for four-string mandolin-banjos, which lacked the jazz-orchestra volume of the double-string instruments, but escaped their problems with tuning and overtones.
French banjoline versus mandolin-banjo
In his 1921 book Méthode for the Banjoline or Mandoline-Banjo, Salvador Leonardi said that naming conventions between the United States and France had applied similar names to different instruments. In France and England, the Banjoline was an open-backed instrument, and the mandoline-banjo was a closed back instrument (with a metallic back that made a "tinny" metallic sound.The American instruments he said were open backed, "and they call Mandoline-Banjo or Bandoline what we call Banjoline."
He said that amateurs and professionals alike preferred the single string instrument to the double stringed version, because of the "nice clear sound," which he said resembled the violin pizzicato.