Instrumentation The
violin (also known as the
fiddle),
five-string banjo,
guitar,
mandolin, and
upright bass (
string bass) are often joined by the
resonator guitar (also referred to as a
Dobro) and (occasionally)
harmonica or
Jew's harp. This instrumentation originated in rural dance bands and is the basis on which the earliest bluegrass bands were formed. The fiddle, made by Italians and first used in sixteenth century Europe, was one of the first instruments to be brought into America. It became popular due to its small size and versatility. They began receiving attention from white Americans when
minstrel shows incorporated the banjo as part of their acts. The "
clawhammer", or two finger style playing, was popular before the Civil War. Now, however, banjo players use mainly the
three-finger picking style made popular by banjoists such as
Earl Scruggs. Guitars are used primarily for rhythmic purposes. Other instruments may provide a solo on top of the guitar during
breaks, guitarists may also provide these solos on occasion. The instrument originates from eighteenth century Spain, but there were no American-made models until the
C.F. Martin Company started to manufacture them in the 1830s. The guitar is now most commonly played with a style referred to as
flatpicking, unlike the style of early bluegrass guitarists such as
Lester Flatt, who used a thumb pick and finger pick. Bassists almost always play
pizzicato, occasionally adopting the "slap-style" to accentuate the beat. A bluegrass
bass line is generally a rhythmic alternation between the root and fifth of each
chord, with occasional
walking bass excursions. Instrumentation has been a continuing topic of debate. Traditional bluegrass performers believe the "correct" instrumentation is that used by Bill Monroe's band, the
Blue Grass Boys (guitar, mandolin, fiddle, banjo, and bass). Departures from the traditional instrumentation have included dobro,
accordion,
harmonica,
piano,
autoharp,
drums,
electric guitar, and electric versions of other common bluegrass instruments, resulting in what has been referred to as "new grass." Despite this debate, even Monroe himself was known to experiment with instrumentation; he once even used a string orchestra, choir, and pre-recorded bird-song track.
Vocals Apart from specific instrumentation, a distinguishing characteristic of bluegrass is vocal harmony featuring two, three, or four parts, often with a
dissonant or
modal sound in the highest voice (see
modal frame), a style described as the "high, lonesome sound". Commonly, the ordering and layering of vocal harmony is called the "stack". A standard stack has a
baritone voice at the bottom, the lead in the middle (singing the main melody) and a
tenor at the top, although stacks can be altered, especially where a female voice is included.
Alison Krauss and Union Station provide a good example of a different harmony stack with a baritone and tenor with a high lead, an octave above the standard melody line, sung by the female vocalist. However, by employing variants to the standard trio vocal arrangement, they were simply following a pattern existing since the early days of the genre. Both
the Stanley Brothers and
the Osborne Brothers employed the use of a high lead with the tenor and baritone below it. The Stanleys used this technique numerous times in their recordings for both Mercury and King records. This particular stack was most famously employed by the
Osborne Brothers who first employed it during their time with MGM records in the latter half of the 1950s. This vocal arrangement would become the trademark of the Osbornes' sound with Bobby's high, clear voice at the top of the vocal stack. Additionally, the
Stanley Brothers also utilized a high baritone part on several of their trios recorded for Columbia records during their time with that label (1949–1952). Mandolin player
Pee Wee Lambert sang the high baritone above Ralph Stanley's tenor, both parts above Carter's lead vocal. This trio vocal arrangement was variously used by other groups as well; even Bill Monroe employed it in his 1950 recording of "When the Golden Leaves Begin to Fall". In the 1960s,
Flatt and Scruggs often added a fifth part to the traditional quartet parts on gospel songs, the extra part being a high baritone (doubling the baritone part sung in the normal range of that voice; E.P. Tullock [aka Cousin Jake] normally providing the part, though at times it was handled by Curly Seckler).
Themes Bluegrass tunes often take the form of
narratives on the everyday lives of the people whence the music came. Aside from laments about loves lost, interpersonal tensions and unwanted changes to the region (e.g., the visible effects of
mountaintop coal mining), bluegrass vocals frequently reference the hardscrabble existence of living in
Appalachia and other rural areas with modest financial resources. Some protest music has been composed in the bluegrass style, especially concerning the vicissitudes of the
Appalachian coal mining industry.
Railroading has also been a popular theme, with ballads such as "
Wreck of the Old 97" and "Nine Pound Hammer" (from the legend of
John Henry). ==History==