Rock and roll (often written as rock & roll or rock 'n' roll) is a genre of popular music that originated and evolved in the United States during the late 1940s and early 1950s, primarily from a combination of African American blues, country, jazz, and gospel music. Though elements of rock and roll can be heard in country records of the 1930s, and in blues records from the 1920s, rock and roll did not acquire its name until the 1950s.

The term "rock and roll" now has at least two different meanings, both in common usage. The American Heritage Dictionary and the Merriam-Webster Dictionary both define rock and roll as synonymous with rock music. Encyclopædia Britannica, on the other hand, regards it as the music that originated in the mid-1950s and later developed "into the more encompassing international style known as rock music". For the purpose of differentiation, this article uses the second definition.

In the earliest rock and roll styles of the late 1940s and early 1950s, either the piano or saxophone was often the lead instrument, but these were generally replaced or supplemented by guitar in the middle to late 1950s. The beat is essentially a blues rhythm with an accentuated backbeat, the latter almost always provided by a snare drum. Classic rock and roll is usually played with one or two electric guitars (one lead, one rhythm), a string bass or (after the mid-1950s) an electric bass guitar, and a drum kit.

Avril Ramona Lavigne (pronunciation: /ˈævrɨl ləˈviːn/; AV-ril lə-VEEN; born 27 September 1984) is a Canadian singer-songwriter. She was born in Belleville, Ontario, but spent most of her youth in the small town of Napanee. By the age of 15, she had appeared on stage with Shania Twain; by 16, she had signed a two-album recording contract with Arista Records worth more than $2 million. In 2002, when she was 17 years old, Lavigne broke onto the music scene with her debut album Let Go.

Let Go made Lavigne the youngest female soloist to reach No. 1 in the UK, and the album was certified four-times platinum by the Recording Industry Association of America. By 2009, over 16 million copies had been sold worldwide. Her breakthrough single, "Complicated", peaked at No. 1 in many countries around the world, as did the album Let Go. Her second album, Under My Skin, was released in 2004 and was her first album to peak at No. 1 on the U.S. Billboard 200, eventually selling more than 10 million copies worldwide. The Best Damn Thing, Lavigne’s third album, was released in 2007, becoming her third No. 1 album in the UK Albums Chart and featuring her first U.S. Billboard Hot 100 No. 1 single, "Girlfriend". Lavigne has scored six number-one singles worldwide, including "Complicated", "Sk8er Boi", "I'm with You", "My Happy Ending", "Nobody's Home", and "Girlfriend". With more than 30 million copies of her albums sold worldwide, Lavigne is one of the top-selling artists releasing albums in the U.S., with over 10.25 million copies certified by the RIAA. Her fourth studio album, Goodbye Lullaby, was released in March 2011. Goodbye Lullaby gave Lavigne her fourth top 10 album on the U.S. Billboard 200 and the UK Albums Chart and her third No. 1 album in both Japan and Australia. Three months after the release of Goodbye Lullaby, Lavigne began work on her fifth album, which will be released on Epic Records following her departure from RCA Records.

George Celino Barnes (July 18, 1895 – July 18, 1954), better known as "Machine Gun Kelly", was an American gangster during the prohibition era. His nickname came from his favorite weapon, a Thompson submachine gun. His most famous crime was the kidnapping of oil tycoon and businessman Charles Urschel in July 1933 for which he, and his gang, earned $200,000 ransom. Unfortunately, their victim had collected and left considerable evidence that assisted the subsequent FBI investigation that eventually led to Kelly's arrest in Memphis, Tennessee on September 26, 1933. His crimes also included bootlegging and armed robbery.

During the Prohibition era of the 1920s and 1930s Kelly worked as a bootlegger for himself as well as a colleague. After a short time, and several run-ins with the local Memphis police, he decided to leave town and head west with his girlfriend. To protect his family and escape law enforcement officers, he changed his name to George R. Kelly. He continued to commit smaller crimes and bootlegging. He was arrested in Tulsa, Oklahoma, for smuggling liquor onto an Indian Reservation in 1928 and sentenced for three years to Leavenworth Penitentiary, Kansas, beginning February 11, 1928. He was reportedly a model inmate and was released early. Shortly thereafter, Kelly married Kathryn Thorne, who purchased Kelly’s first machine gun and went to great lengths to familiarize his name in the underground crime circles. She was known to hand out the expended .45cal cartridge casings from his Tommy Gun as souvenirs. Some historians claim that Kathryn even went so far as to plot some small bank robberies.^{[citation needed]}

Lewis Allan "Lou" Reed, born March 2, 1942, is an American rock musician, songwriter, and photographer. He is best known as guitarist, vocalist, and principal songwriter of The Velvet Underground, and for his solo career, which has spanned several decades. Though the Velvet Underground were a commercial failure in the late 1960s, the group has gained a considerable cult following in the years since its demise and has gone on to become one of the most widely cited and influential bands of the era. As the Velvet Underground's principal songwriter, Reed wrote about subjects of personal experience that rarely had been examined so openly in rock and roll, including sexuality and drug culture.

After his departure from the group, Reed began a solo career in 1971. He had a hit the following year with "Walk on the Wild Side", although he subsequently lacked the mainstream commercial success its chart status seemed to indicate. Reed's work as a solo artist frustrated critics wishing for a return of the Velvet Underground. In 1975, Reed released a double album of feedback loops, Metal Machine Music, upon which he later commented, "No one is supposed to be able to do a thing like that and survive."

Huey Lewis (Hugh Anthony Cregg III, born July 5, 1950) is an American musician, songwriter, and actor.

Lewis sings lead and plays harmonica for his band, Huey Lewis and the News, in addition to writing or co-writing many of the band's songs. The band is perhaps best known for their third album, Sports, and their contribution to the soundtrack of the 1985 feature film Back to the Future. Lewis previously played with the band Clover from 1972 to 1979.

Huey Lewis was born in New York City. His father, Hugh Anthony Cregg II, was an Irish American from Boston and his mother, Magda, was a Polish refugee.

Lewis was raised in Marin County, California, attending Strawberry Point Elementary School (where he skipped second grade) and Edna Maguire Junior High School in Mill Valley. When he was 13, his parents divorced and he attended and later graduated from the Lawrenceville School in New Jersey, in 1967, where he achieved a perfect score of 800 on the math portion of the SAT. Lewis applied to and was accepted by Cornell University in Ithaca, New York.