Singing is the act of producing musical sounds with the voice, and augments regular speech by the use of both tonality and rhythm. One who sings is called a singer or vocalist. Singers perform music known as songs that can be sung either with or without accompaniment by musical instruments. Singing is often done in a group of other musicians, such as in a choir of singers with different voice ranges, or in an ensemble with instrumentalists, such as a rock group or baroque ensemble. As in many respects human song is a form of sustained speech, nearly anyone able to speak can also sing. Singing can be formal or informal, arranged or improvised. It may be done for pleasure, comfort, ritual, education, or profit. Excellence in singing requires time, dedication, instruction, and regular practice. Professional singers usually build their careers around one specific musical genre, such as classical or rock. They typically take voice training provided by voice teachers or vocal coaches throughout their careers.

Christina Victoria Grimmie (born March 12, 1994), known on YouTube as zeldaxlove64, is a pianist and singer/songwriter known for her covers of hit songs by artists such as Demi Lovato, Selena Gomez, Christina Aguilera, Miley Cyrus, Justin Bieber, Katy Perry and many more. In June 2011, she released her debut EP, Find Me.

Christina Grimmie is best known for her cover with fellow Youtuber, Sam Tsui, of Nelly's "Just a Dream" which has had about 60 million views between the two official versions of the video as of May 15, 2012. Her first video was "I Don't Wanna Be Torn", originally by Hannah Montana. She first reached YouTube stardom early on with her cover of Miley Cyrus's "Party in the U.S.A." on August 2009. Since, she's had over 289 million views and over 1.5 million subscribers on her channel as of May 15, 2012, which has made her the 4th most subscribed musician on YouTube. She also placed at number 2 at the top 5 of the MyYoutube competition, behind Selena Gomez, and in front of Rihanna, Nicki Minaj and Justin Bieber.

Anne Marie Ojales Curtis-Smith, also known as Anne Curtis-Smith (born on 17 February 1985 in Yarrawonga, Victoria, Australia) is a Filipino/Spanish-Australian, of British descent^{[citation needed]}actress, model, television host, singer, fashion icon, recording artist and VJ, currently active in the Philippines.

Born Anne Curtis, she is the eldest daughter of Carmen Ojales, a Filipina and James Curtis-Smith, an Australian lawyer. She was discovered while on vacation in the Philippines at the age of 12 which made her visit permanent.

Anne Curtis was born in Yarrawongga, Australia. Annually, her family visits the Philippines to see their mother's relatives. However, in 1997, her visit became permanent as she was approached while eating in a fast-food restaurant and was asked if she is interested in modeling. Within a week or so, Curtis bagged her first commercial. Because of this, she and her dad decided to move in the Philippines. She did her 7th grade in Colegio de Sta. Rita, and because she was not able to speak Filipino fluently, she had special Filipino classes. Her first movie was Magic Kingdom, where she played a princess. After this, she appeared in several supporting roles in GMA Network's shows. Some of the shows were T.G.I.S., Ikaw Na Sana and the long-running situational comedy series Beh Bote Nga

Milla Jovovich ( /ˈjoʊvəvɪtʃ/ YOH-və-vich; born Milica Jovović,Serbian Cyrillic: Милица Јововић, Russian: Милица Йовович; December 17, 1975) is an American model, actress, musician, and fashion designer. Over her career, she has appeared in a number of science fiction and action-themed films, for which music channel VH1 has referred to her as the "reigning queen of kick-butt".

Milla Jovovich began modeling when Gene Lemuel convinced Herb Ritts to shoot her for the cover of Lei magazine.Richard Avedon featured her in Revlon's "Most Unforgettable Women in the World" advertisements, and she continued her career with other campaigns for L'Oréal cosmetics, Banana Republic, Christian Dior, Donna Karan, and Versace. In 1988, she had her first professional acting role in the television film The Night Train to Kathmandu, and later that year, she appeared in her first feature film, Two Moon Junction. Following more small television appearances such as the "Fair Exchange" (1989) and a 1989 role as a French girl (she was 14 at the time) on a Married... with Children episode and film roles, she gained notoriety with the romance film Return to the Blue Lagoon (1991). She appeared in 1993's Dazed and Confused, before a short hiatus. Jovovich then acted alongside Bruce Willis in the science fiction film The Fifth Element (1997), and later played the title role in The Messenger: The Story of Joan of Arc (1999). In 2002, she starred in the video game adaptation Resident Evil, which spawned four sequels: Resident Evil: Apocalypse (2004), Resident Evil: Extinction (2007), Resident Evil: Afterlife (2010) and Resident Evil: Retribution (2012).

Evan Rachel Wood (born September 7, 1987) is an American actress and singer. She began her acting career in the late 1990s, appearing in several television series, including American Gothic and Once and Again. She made her debut as a leading film actress in Little Secrets (2002) and became well known after her transition to a more adult-oriented Golden Globe-nominated role in the teen drama film Thirteen (2003).

Wood continued acting mostly in independent films, including Pretty Persuasion (2005), Down in the Valley (2006), Running with Scissors (2006), and in the big studio production Across the Universe (2007). Wood has been described by The Guardian as "one of the best actresses of her generation." Wood was engaged to Marilyn Manson until August 2010.

Evan Rachel Wood was born in Raleigh, North Carolina. Her father, Ira David Wood III, is a locally prominent actor, singer, theater director, and playwright who is the Executive Director of a local regional theatre company called Theatre in the Park. Her mother, Sara Lynn Moore (born March 6, 1958), is an actress, director, and acting coach. Wood's brother, Ira David Wood IV, is also an actor; she has another brother, Dana. Her paternal aunt, Carol Winstead Wood, is a Hollywood production designer.