Blues music is music genre that origins from African-American communities of the United States around the end of the 19th century from spirituals, work songs and field hollers, because African-American people in the past were forbiddent to talk to each other in the field or at work, so they improvized it with melody and rhyme.
In blues music theory the term “the blues” which refers to the “blue devils”, meaning melancholy and sadness. First definition of the blues music is found in George Colman’s one-act farce Blue Devils in 1798. Though the use of the phrase in African-American music may be older, it has been attested to since 1912, when Hart Wand’s “Dallas Blues” became the first copyrighted blues composition.
In lyrics, we define blues as the phrase that is often used to describe a depressed mood. Blues music theory is based on the blues form, specific melanchony lyrics, bass lines and instruments.
In the future, blues will have great impact on american and western popular music, it will become part of many other music genres such as jazz, rythm and blues, hip-hop, rock and roll.