Rock music is a genre of popular music that developed during and after the 1960s, particularly in the United Kingdom and the United States. It has its roots in 1940s and 1950s rock and roll, itself heavily influenced by rhythm and blues and country music. Rock music also drew strongly on a number of other genres such as blues and folk, and incorporated influences from jazz, classical and other musical sources.

Musically, rock has centered around the electric guitar, usually as part of a rock group with bass guitar and drums. Typically, rock is song-based music usually with a 4/4 time signature utilizing a verse-chorus form, but the genre has become extremely diverse and common musical characteristics are difficult to define. Like pop music, lyrics often stress romantic love but also address a wide variety of other themes that are frequently social or political in emphasis. The dominance of rock by white, male musicians has been seen as one of the key factors shaping the themes explored in rock music. Rock places a higher degree of emphasis on musicianship, live performance, and an ideology of authenticity than pop music.

William Leonard Roberts II (born January 28, 1976), better known by his stage name Rick Ross (often stylized as RICK RO$$), is an American rapper. He derived his stage name from the drug trafficker "Freeway" Ricky Ross, to whom he has no connection. Ross founded the record label Maybach Music Group, on which he released his studio albums Deeper Than Rap and Teflon Don, Ross was also the first artist signed to Diddy's management company Ciroc Entertainment. In early 2012, MTV named Ross as the Hottest MC In The Game.

William Leonard Roberts II was born in Coahoma County, Mississippi. and raised in Carol City, Florida, near Miami. After graduating from Carol City Senior High School, he later attended the historically black college Albany State University on a football scholarship.

After being signed to Suave House Records, former label for rap duo 8Ball & MJG, he eventually signed a deal with Slip-n-Slide Records, which has been under the Def Jam umbrella since 2006. While signed to Slip-n-Slide, Ross toured with fellow rapper Trick Daddy and made guest performances on other Slip-n-Slide albums.

Torrence Hatch (born November 14, 1982), better known by his stage name Lil Boosie, is an American rapper from Baton Rouge, Louisiana. Hatch was bestowed the nickname Boosie by his family, and he was raised in southside Baton Rouge. He is currently serving time in the Louisiana State Penitentiary (Angola); Hatch was sentenced to eight years after pleading guilty to drug charges.

Hatch grew up in a poor neighborhood of Baton Rouge, and his father was absent from his childhood. He played basketball while attending high school but was expelled for drugs, so Hatch decided to become a rapper. He worked with rapper C-Loc and his group Concentration Camp and made his debut on C-Loc's fifth album, It's a Gamble in 2000 as his old alias Boosie. Shortly afterwards, Hatch joined growing record label Trill Entertainment which was backed by its CEO the late Pimp C of UGK. Soon after, Trill independently released his debut album For My Thugz as his new alias Lil Boosie in 2003. Later, Boosie teamed with label mate Webbie, on their collaboration albums Ghetto Stories and Gangsta Musik.

Lauren Bennett (born 23 June 1989) is a British singer, dancer and model. She is best known for her involvement with girl group the Paradiso Girls and her work with Cee Lo Green and LMFAO. She is the new lead singer in the new line-up of the Pussycat Dolls.

Bennett was raised in Meopham, Kent and went to a song and dance school in Tunbridge Wells. She also auditioned for the third series of The X Factor in 2006 and made it to bootcamp, but was sent home.

Bennett was part of a girl group called Paradiso Girls. The group consisted of seven members at its formation in 2007, but by 2008 it had dropped to five. Each member comes from a different country: Chelsea Korka from the United States, Aria Crescendo from France, Kelly Beckett from Barbados, Shar Mae Amo from the Philippines and Lauren herself from the United Kingdom. The band was signed to Interscope Records. Their debut single "Patron Tequila" featuring Lil’ Jon and Eve was released on 12 May 2009 and reached 3 on the Hot Dance Club Play Chart and 82 in Canadian Hot 100. After their second single, "Who's My B***" was unsuccessful, the group was put on an indefinite hiatus in 2010.

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.