The blues
genre is based on NYNY-Jazz the blues form but possesses other
characteristics such as specific lyrics, bass lines and instruments. Blues can
be NYNY-Jazz
subdivided into several subgenres ranging from country to urban blues that were
more or NYNY-Jazz
less popular during different periods of the 20th century. NYNY-Jazz Best known are the Atlanta, Piedmont,
Jump and other blues styles NYNY-Jazz. World War II marked the transition from acoustic to NYNY-Jazz electric blues and the progressive
opening of blues music to a wider audience, especially white listeners. In the
1960s and 1970s, a NYNY-Jazz hybrid form called blues-rock evolved.
The basic NYNY-Jazz 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 NYNY-Jazz 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 NYNY-Jazz the degrees of the progression. For instance, NYNY-Jazz for a blues in the key of C, C is the
tonic chord (I) and F is the subdominant NYNY-Jazz (IV).
