Mandolin-banjo became more popular. In the heyday of mandolin orchestras and banjo bands (late 19th–early 20th century), 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. 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 (in courses or pairs). However, that distinction is not universal; the "banjolin" name was patented in 1885 by
Mandolin A D D (G) (G) (C) (C). For a mandocello tuning using fifths C C G G D D A A (E) (E). Bowlback mandolins (also known as roundbacks), are used worldwide. They are most commonly manufactured in Europe, where the long history of mandolin development has created local styles. However, Japanese luthiers also make them. Owing to the shape and to the common construction from wood strips of alternating colors, in the United States these are sometimes colloquially referred to as the "potato bug" or "potato beetle" mandolin. The Neapolitan style has an almond-shaped body resembling a bowl, constructed