is a common name for a grass commonly called "Kentucky Bluegrass".
Bluegrass music is a genre of American roots music that
developed in the 1940s in the United States. The genre
derives its name from the band "Bill
Monroe and his Blue Grass Boys" from Kentucky.
Due to this lineage, Bill Monroe is generally accepted as the
"Father of Bluegrass Music" among Bluegrass enthusiasts.
Bluegrass, as a distinct musical form, developed from elements of
old-time music and traditional music of the Appalachian Mountain region
of the United States. The Appalachian region was where many
English and Scottish immigrants settled, bringing with them the musical
traditions of their homelands. Unlike mainstream country
music, Bluegrass is traditionally played on acoustic stringed
instruments. Bluegrass music emphasizes the off-beat and notes are
anticipated, in contrast to laid back blues-style music where notes are
behind the beat. This creates the higher energy
characteristic of Bluegrass music. In Bluegrass music, one or
more instruments normally takes its turn playing the melody and
improvising around it (called a "break")
while the other instruments perform accompaniment. This is in
contrast to old-time music, in which all instruments play the melody
together or one instrument carries the lead throughout the song while
the others provide accompaniment. Breaks are often
characterized by rapid tempos and unusual instrumental dexterity and
sometimes complex chord changes.