The blues
genre is based on Boston-Blues
the blues form but possesses other characteristics such as specific lyrics,
bass lines and instruments. Blues can be Boston-Blues subdivided into several subgenres
ranging from country to urban blues that were more or Boston-Blues less popular during different periods
of the 20th century. Boston-Blues Best known are the Atlanta, Piedmont,
Jump and other blues styles Boston-Blues. World War II marked the transition
from acoustic to Boston-Blues electric blues and the progressive
opening of blues music to a wider audience, especially white listeners. In the
1960s and 1970s, a Boston-Blues hybrid form called blues-rock
evolved.
The basic Boston-Blues 12-bar lyric framework of a blues
composition is reflected by a standard harmonic progression of 12 bars in a 4/4
time signature. The blues chords associated to a Boston-Blues twelve-bar blues are typically a set
of three different chords played over a 12-bar scheme. They are labeled by
Roman numbers referring to Boston-Blues the degrees of the progression. For
instance, Boston-Blues
for a blues in the key of C, C is the tonic chord (I) and F is the subdominant Boston-Blues (IV).
