Electric blues in the context of "Muddy Waters"

Rock music is a genre of popular music that originated in the United States as "rock and roll" in the late 1940s and early 1950s, developing into a range of styles from the mid-1960s, primarily in the United States and United Kingdom. It has its roots in rock and roll, a style that drew from the black musical genres of blues and rhythm and blues, as well as from country music. Rock also drew strongly from genres such as electric blues and folk, and incorporated influences from jazz and other styles. Rock is typically centered on the electric guitar, usually as part of a rock group with electric bass guitar, drums, and one or more singers.

Usually, rock is song-based music with a
₄ time signature and using a verse–chorus form; however, the genre has become extremely diverse. Like pop music, lyrics often stress romantic love but also address a wide variety of other themes that are frequently social or political. Rock was the most popular genre of music in the U.S. and much of the western world from the 1960s up to the 2010s.

An electric guitar is a guitar that requires external electric sound amplification in order to be heard at typical performance volumes, unlike a standard acoustic guitar. It uses one or more pickups to convert the vibration of its strings into electrical signals, which ultimately are reproduced as sound by loudspeakers. The sound is sometimes shaped or electronically altered to achieve different timbres or tonal qualities via amplifier settings or knobs on the guitar. Often, this is done through the use of effects such as reverb, distortion and "overdrive"; the latter is considered to be a key element of electric blues guitar music and jazz, rock and heavy metal guitar playing. Designs also exist combining attributes of electric and acoustic guitars: the semi-acoustic and acoustic-electric guitars.

Invented in 1932, the electric guitar was adopted by jazz guitar players, who wanted to play single-note guitar solos in large big band ensembles. Early proponents of the electric guitar on record include Les Paul, Eddie Durham, George Barnes, Lonnie Johnson, Sister Rosetta Tharpe, T-Bone Walker, and Charlie Christian. During the 1950s and 1960s, the electric guitar became the most important instrument in popular music. It has evolved into an instrument that is capable of a multitude of sounds and styles in genres ranging from pop and rock to folk to country music, blues and jazz. It served as a major component in the development of electric blues, rock and roll, rock music, heavy metal music and many other genres of music.

Rockabilly is one of the earliest styles of rock and roll music. It dates back to the early 1950s in the United States, especially the South. As a genre, it blends the sound of Western musical styles such as country with that of rhythm and blues, leading to what is considered "classic" rock and roll. Some have also described it as a blend of bluegrass with rock and roll. The term "rockabilly" itself is a portmanteau of "rock" (from "rock 'n' roll") and "hillbilly", the latter a reference to the country music (often called "hillbilly music" in the 1940s and 1950s) that contributed strongly to the style. Other important influences on rockabilly include Western swing, boogie-woogie, jump blues, and electric blues.

Defining features of the rockabilly sound included strong rhythms, boogie woogie piano riffs, vocal twangs, doo-wop acapella singing, and common use of the tape echo; and eventually came to incorporate different instruments and vocal harmonies. Initially popularized by artists such as Carl Perkins, Elvis Presley, Johnny Burnette, Jerry Lee Lewis and others, the rockabilly style waned in the late 1950s; nonetheless, during the late 1970s and early 1980s, rockabilly enjoyed a revival. An interest in the genre endures even in the 21st century, often within musical subcultures. Rockabilly has spawned a variety of sub-styles and has influenced the development of other genres such as punk rock.

Rock and roll (often written as rock & roll, rock-n-roll, and rock 'n' roll) is a genre of popular music that evolved in the United States during the late 1940s and early 1950s. The origins of rock and roll include a mix of styles, mainly rhythm and blues and country music, with influence from gospel, jazz, boogie-woogie, electric blues, jump blues, swing, and folk music. While rock and roll's early elements can be heard in blues records from the 1920s and in country records of the 1930s, the genre did not acquire its name until 1954.

By the mid-1960s, rock and roll had developed into "the more encompassing international style known as rock music, though the latter also continued to be known in many circles as rock and roll". For the purpose of differentiation, this article deals with the first definition.

Rhythm and blues, frequently abbreviated as R&B or R'n'B, is a genre of popular music that originated within African American communities in the 1940s. The term was originally used by record companies to describe recordings marketed predominantly to African Americans, at a time when "rocking, jazz based music ... [with a] heavy, insistent beat" was starting to become more popular.In the commercial rhythm and blues music typical of the 1950s through the 1970s, the bands usually consisted of a piano, one or two guitars, bass, drums, one or more saxophones, and sometimes background vocalists. R&B lyrical themes often encapsulate the African-American history and experience of pain and the quest for freedom and joy, as well as triumphs and failures in terms of societal racism, oppression, relationships, economics, and aspirations.

The term "rhythm and blues" has undergone a number of shifts in meaning. In the early 1950s, it was frequently applied to blues records. Starting in the mid-1950s, after this style of music had contributed to the development of rock and roll, the term "R&B" became used in a wider context. It referred to music styles that developed from and incorporated electric blues, as well as gospel and soul music. By the 1970s, the term "rhythm and blues" had changed once again and was used as a blanket term for soul and funk.

An effects unit, effects processor, or effects pedal is an electronic device that alters the sound of a musical instrument or other audio source through audio signal processing.

Common effects include distortion/overdrive, often used with electric guitar in electric blues and rock music; dynamic effects such as volume pedals and compressors, which affect loudness; filters such as wah-wah pedals and graphic equalizers, which modify frequency ranges; modulation effects, such as chorus, flangers and phasers; pitch effects such as pitch shifters; and time effects, such as reverb and delay, which create echoing sounds and emulate the sound of different spaces.

British rhythm and blues (or R&B) was a musical movement that developed in the United Kingdom between the late 1950s and the early 1960s, and reached a peak in the mid-1960s. It overlapped with, but was distinct from, the broader British beat and more purist British blues scenes, attempting to emulate the music of American blues and rock and roll pioneers, such as Muddy Waters and Howlin' Wolf, Chuck Berry and Bo Diddley. It often placed greater emphasis on guitars and was often played with greater energy.

The origins of the movement were in the British jazz, skiffle and folk movements of the 1950s. The 1958 visit of Muddy Waters influenced key figures Cyril Davies and Alexis Korner to turn to electric blues and form the band Blues Incorporated, which became something of a clearing house for British rhythm and blues musicians. A flourishing scene of clubs and groups emerged in the later 1950s and 1960s and bands began to break through into mainstream success. Major acts included the Rolling Stones, Manfred Mann, the Animals, the Yardbirds, Them, and the Spencer Davis Group, who dominated the UK and US charts from 1964, in the wake of the Merseybeat craze, becoming central to the beatnik and mod subculture in the UK and a second wave of British Invasion acts in the US.