Roy Acuff was the king of country music. He played the harmonica and his music became very attracted. He also included fiddle in his music work.

Hank Williams was the most influential country artist of all time. He was a songwriter and guitarist. He developed his career from influence of Williams. He ushered country music into the modern era. His music had an influence on the rock and folk music. His career was ruined by alcohol taking in which he was fired in numerous shows.

Nashville sound was most famous county music in 1950s and early 1960. It overtook Honky Tonk by winning back the youth which had turned into roll and rock music. They played a 'pop' version of country music using string instruments and lead vocals. Outlaw country in 1970s became famous through Waylon Jennings music. They introduced the movement objective for its members to be self-declared which was Nashville sound reaction. They introduced life and restored raw foundation in country music. Their music was on hard working men, honky-tonk heroes, drugs and drinking.

Blues is a musical form and genre that developed from roots and spirituals. Blues are characterized by its lyrics, instrumentation and bass lines. Banjo was the most used instrument at early ages but guitar and piano where added later. It is based on African tradition. The melody of blue song came from dance songs and slave work songs. Its note has a lower pitch as compared to Western music. The spiritual, rhythm and melodic nature of blues were influenced from the African culture. It involves harmony that focuses on the first, fourth and fifth cords. Its melody emphasis on the third, fifth and seventh notes. The rhythm of blue music is based on 48-beat which is repetitive and a 12-bar.Blues were published by William Handy is credited as among the o first people to distribute print music.

Marnie Smith was an African - American singer, an entertainer and a dancer who made several films. Smith is known to be the first in recording real 'race record'. Her music was more of a jazz than blue.

Classic blues was introduced Charley Patton. He brought guitar into prominence. He had influence on the blues which can be considered as the early roller and rock music.

Folk blue music has its origin to traditional popular cultures. It is characterized by a lack of written rules and set principles though it has a special pattern. Other features include; song repetition with the rhyme maintained in other lines, questionnaire form lyrics, they are associated with mythological characters of many gods and the lyrics of folk songs are fluent and natural.

The early blues are different from the Chicago blues. The early blues where acoustic and were performed by a single artist while the Chicago blues are urban electric blues. The Chicago blues is played using the electric guitar, harmonica, piano and drum in form of a band.

The blues gave rise to R & B and gave the possibility of the production and sales of records. These include race and chess records. Race music was a music designation for African­ American community while chess record was associated with the blues and the emerging of roll and rock music. This came into fame in 1991.

Rock and roll music described sex and dancing models. Sun records were developed at this age.

American Bandstand was the American TV show which was most popular in promotion of roll and rock entertainment. This enhanced the growth of many rock artist. Ray Charles is being considered as the rock and roll innovator to soul genre.

Fork music is being described as music by the people for the people. It introduce traditional, community and political themes in the music world.

Doo-wop is a music genre with its origin by African American youth in New York. It is characterized by little or no instrumentation, simple lyrics, and vocal melody with an engaging melodic line. They are usually about love.

Tin Pan Alley music has its origin at New York which is a collective sound consisting of cheap upright pianos. Aldon music was a company in New York for publishing music. It played a key role in shaping the Brill Building Sound. Phil Spector is an American sound producer, songwriter, and a musician. He made use of piano, vocals, and guitar to play pop and rock music.

Surf music is a rock music from surf culture found in southern California. It is characterized by drenched electric guitars that were played to evoke crashing sound waves and instrumental surf. Dick Dales and his band Del-tones are the pioneers of surf music.

British invasion was a term used to describe the British wave of the rock bands. Skiffle music was a British rock equivalent music that was influenced by folk, blue and jazz music.  The "Mersey Beat" was a Liverpool band sound which later became standard roll and rock music.

The Beatles revolutionized the pop music by use of a guitar. It generated throughout the world and inspired several generations on youth pop culture. The rolling stones in the history are the greatest roll and rock bands. They maintained their popularity with each generation. They had a background steeped in blues.

The Who was a band which was part of the hip 'Mod' scene. They broke many barriers such as excessive volumes, themes for lyrics and stage antics. The smashing instruments became relevant during the era of this band.

Motown involved a Jobete music publishing company, three record labels (Tamla, Motown, and Gordy), a style of music and a family of singers, musicians, songwriters and producers. They were under Berry Gordy as the director. The Funk brothers were integral part of the Motown. They are known for perfection in tracks recording usually in a live studio setting.

Soul music was a music genre that evolved in South America. It was an expression for the need of social change. It had the elements of jazz, folk and blue music.

Acid rock is a music genre defined by the lyrics with drug differences, distorted and heavy guitars and improvised jams. For instance, the 'Summer of Love'. Hippie movement are some of the social elements in this songs. This genre did not last too long.

Power trios and Heavy metal involved guitarist playing both rhythm and lead roles. Blues was their music style output. Punk rock is a genre that originated in the United States in 1950s. This music genre is characterized by hard-edged melodies, singing styles, short paced songs, and anti­ established lyrics, often political and stripped-down instrumentation.

Reference

• Cataltepe, Z., Yaslan, Y., & Somnez, A. (2007). Music genre classification using MIDI and audio features. EURASIP Journal on Advances in Signal Processing, 2007(1), 036409.
• King, B. B., & Ritz, D. (1996). Blues all around me: The autobiography of BB King (p. 23). New York: Avon Book.
• McKinney, M., & Breebaart, J. (2003). Features for audio and music classification.