Five-string Banjo
The modern 5-string banjo is a variation on Sweeney's original design. The fifth string is usually the same gauge as the first, but starts from the fifth fret, three quarters the length of the other strings. (The long-necked Vega Pete Seeger model starts the fifth string from the eighth fret.) This lets the string be tuned to a higher open pitch than possible for the full-length strings. The short fifth string means that, unlike many string instruments, strings pitches on a five string banjo do not go in order from lowest to highest across the fingerboard. Instead, from low to high, they go fourth, third, second, first, and fifth. This is a form of reentrant tuning.
The short fifth string presents special problems for a capo. For small changes (going up or down one or two semitones, for example) it is possible simply to re-tune the fifth string. Otherwise, various devices called fifth string capos can effectively shorten the string. Many banjo players use model railroad spikes or titanium spikes (usually installed at the seventh fret and sometimes at others), that they hook the string under to press it down on the fret.
Many tunings are used for the five-string banjo. Probably the most common, particularly in bluegrass, is the Open-G tuning g'dgbd'. In earlier times, the tuning g'cgbd' was commonly used instead. Other tunings found in old-time music include double C (g'cgc'd'), "sawmill" (g'dgc'd') also called "mountain modal" and open D (f#'df#ad'.) These tunings are often taken up a tone, either by tuning up or using a capo. For example "old-time D" tuning (a'dad'e') - commonly reached by tuning up from double C - is often played to accompany fiddle tunes in the key of D and Open-A (a'eac#'e') is usually used for playing tunes in the key of A.
While the size of the five string banjo is largely standardized, smaller and larger sizes are available including the long-neck or Seeger neck variation designed by Pete Seeger. Petite variations on the 5-string banjo have been available since the 1890s. S.S. Stewart introduced the banjeaurine, tuned one fourth above a standard five-string. Piccolo banjos are smaller, and tuned one octave above a standard banjo. Between these sizes and the standard there is the A-scale banjo, which is two frets shorter and usually tuned one full step above standard tunings. A "Stealth" brand banjo is a modern 5 string banjo with a 25.5" scale length, similar to a guitar.
American old-time music typically uses the five-string open back banjo. It is played in a number of different styles, the most common being clawhammer or frailing, characterized by the use of a downward rather than upward motion when striking the strings with a fingernail. Frailing techniques use the thumb to catch the fifth string for a drone after each strum or twice in each action ("double thumbing"), or to pick out additional melody notes in what is known as "drop-thumb." Pete Seeger popularised a folk style by combining clawhammer with "up picking", usually without the use of fingerpicks. Another common style of old-time banjo playing is Fingerpicking banjo or classic banjo. This style is based upon parlor-style guitar.
Bluegrass music, which uses the five-string resonator banjo almost exclusively, is played in several common styles. These include Scruggs style, named after Earl Scruggs; melodic, or Keith style, named for Bill Keith; and three-finger style with single string work, also called Reno style after Don Reno. In these styles the emphasis is on arpeggiated figures played in a continuous eighth-note rhythm, known as rolls. All of these styles are typically played with fingerpicks. The Bluegrass (resonator) style banjo was introduced by Earl Scruggs who in fact invented the three finger style roll, which is presented in contemporary Bluegrass music. This was mixed with the sounds Bill Monroe had created to form what is recognized as the genre of Bluegrass.
The five-string banjo has been used in classical music since before the turn of the 20th century. Contemporary and modern works have been written or arranged for the instrument by Buck Trent, Béla Fleck, Tony Trischka, Steve Martin, Tim Lake, George Crumb, Modest Mouse, Jo Kondo, Paul Elwood, Hans Werner Henze (notably in his Sixth Symphony), Daniel Mason of Hank Williams III's Damn Band, Beck, the Water Tower Bucket Boys, Todd Taylor, J.P. Pickens, Peggy Honeywell, Norfolk & Western, Putnam Smith, Iron & Wine, The Avett Brothers, Punch Brothers and Sufjan Stevens.
The first 5-string electric solid-body banjo was developed by Charles (Buck) Wilburn Trent, Harold "Shot" Jackson, and David Jackson in 1960.
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