In art, performance art is a performance presented to an audience, traditionally interdisciplinary. Performance may be either scripted or unscripted, random or carefully orchestrated; spontaneous or otherwise carefully planned with or without audience participation. The performance can be live or via media; the performer can be present or absent. It can be any situation that involves four basic elements: time, space, the performer's body, or presence in a medium, and a relationship between performer and audience. Performance art can happen anywhere, in any venue or setting and for any length of time. The actions of an individual or a group at a particular place and in a particular time constitute the work.

Performance art is an essentially contested concept: any single definition of it implies the recognition of rival uses. As concepts like "democracy" or "art", it implies productive disagreement with itself.

The meaning of the term in the narrower sense is related to postmodernist traditions in Western culture. From about the mid-1960s into the 1970s, often derived from concepts of visual art, with respect to Antonin Artaud, Dada, the Situationists, Fluxus, Installation art, and Conceptual Art, performance art tended to be defined as an antithesis to theatre, challenging orthodox art forms and cultural norms. The ideal had been an ephemeral and authentic experience for performer and audience in an event that could not be repeated, captured or purchased. The in this time widely discussed difference, how concepts of visual arts and concepts of performing arts are utilized, can determine the meanings of a performance art presentation (compare Performance: A Critical Introduction by Marvin Carlson, P. 103,2-105,1).

Yoko Ono (オノ・ヨーコ（小野 洋子）, Ono Yōko^?, born February 18, 1933) is a Japanese artist, author, and peace activist, known for her work in avant-garde art, music and filmmaking as well as her marriage to John Lennon. Ono brought feminism to the forefront in her music which prefigured New Wave music and is known for her philanthropic contributions to the arts, peace and AIDS outreach programs.

Yoko Ono was born in Tokyo in 1933 to mother Isoko Ono, the great-granddaughter of Zenjiro Yasuda of the Yasuda banking family, and to father Yeisuke Ono, a banker and one-time classical pianist who was a descendant of an Emperor of Japan. The name "Yoko" means "ocean child". Two weeks before she was born, her father was transferred to San Francisco by his employer, the Yokohama Specie Bank. The rest of the family followed soon after and Yoko met her father when she was two. Her younger brother Keisuke was born in December 1936. In 1937, her father was transferred back to Japan and Ono was enrolled at Tokyo's Gakushuin (also known as the Peers School), one of the most exclusive schools in Japan.

Shia Saide LaBeouf ( /ˈʃaɪ.ə ləˈbʌf/; born June 11, 1986) is an American actor who became known among younger audiences for his part in the Disney Channel series Even Stevens and for his film debut in Holes (2003), based on the novel of the same title by Louis Sachar. In 2004, he made his directorial debut with the short film Let's Love Hate and later directed and shot the music video for "I Never Knew You" by rapper Cage. In 2007, LaBeouf starred as the lead in the commercially successful films, Disturbia and Transformers. His other films include Indiana Jones and the Kingdom of the Crystal Skull (2008), Transformers: Revenge of the Fallen (2009), Wall Street: Money Never Sleeps (2010), and Transformers: Dark of the Moon (2011).

LaBeouf was born in Los Angeles, the only child of Shayna (née Saide) and Jeffrey Craig LaBeouf. His mother is a dancer and ballerina turned visual artist and clothing jewelry designer. His father is a Vietnam War veteran who had numerous jobs. LaBeouf's mother is Jewish, and LaBeouf's father, who is of Cajun (French) descent, is Christian. LaBeouf was raised in his mother's Jewish religion and had a Bar Mitzvah; he was also baptized in the Angelus church.