An auditorium is a room built to enable an audience to hear and watch performances at venues such as theatres. For movie theaters, the number of auditoriums is expressed as the number of screens.

The term is taken from Latin (from audītōrium, from audītōrius (“‘pertaining to hearing’”)); the concept is taken from the Greek auditorium, which had a series of semi-circular seating shelves in the theatre, divided by broad 'belts', called diazomata, with eleven rows of seats between each.

The audience in a modern theatre are usually separated from the performers by the proscenium arch, although other types of stage are common.

The price charged for seats in each part of the auditorium (known in the industry as the house) usually varies according to the quality of the view of the stage. The seating areas can include some or all of the following:

Dante Terrell Smith (born December 11, 1973) is an American actor and MC, known by the stage names Mos Def ( /ˌmoʊsˈdɛf/) and Yasiin Bey. He started his hip hop career in a group called Urban Thermo Dynamics, after which he appeared on albums by Da Bush Babees and De La Soul. With Talib Kweli, he formed the duo Black Star, which released the album Black Star in 1998. He was a major force in late 1990s underground hip hop while with Rawkus Records. As a solo artist he has released the albums Black on Both Sides in 1999, The New Danger in 2004, True Magic in 2006, and The Ecstatic in 2009.

Although he was initially recognized for his musical output, since the early 2000s, Mos Def's screen work has established him as one of only a handful of rappers who has garnered critical acclaim for his acting work. He is well known for his portrayal of Brother Sam in the American drama series Dexter. Mos Def has also been active in several social and political causes.

He was born Dante Terrell Smith in Brooklyn, New York City, the son of Sheron Smith and Abdul Rahman. He was raised by his mother in Brooklyn; his father lived in New Jersey. While his father was initially a member of the Nation of Islam and later an active member in the community of Imam Warith Deen Mohammed, who merged into mainstream Islam from the Nation, Mos Def was not exposed to Islam until the age of 13. At 19, he took his shahada, the Muslim declaration of faith. He is friends with Ali Shaheed Muhammad and Q-Tip of A Tribe Called Quest.

Richard Walters (born January 14, 1965), better known by his stage name Slick Rick, is a Grammy-nominated British American rapper. He has also been known as MC Ricky D and Rick the Ruler. He began his career in late 1983, in the hip hop genre, where he recorded a series of acclaimed recordings such as "La Di Da Di" and "Children's Story". Walters is best known for his storytelling innovations in this genre. His music has been frequently sampled and interpolated by other artists such as TLC, Black Star, The Notorious B.I.G. and Snoop Dogg, with many of these songs later becoming hit singles. Slick Rick rose to stardom in an era known to fans as the Golden age of hip hop.

Born and brought up in the south-west London suburb of Wimbledon, Walters later moved with his British Jamaican family to The Bronx in 1977 where he met Dana Dane with whom he later formed a hip hop duo known as the Kangol Crew. Walters received his characteristic eye patch after being blinded in the right eye by broken glass as an infant. Once he gained a degree of wealth, Walters earned a reputation for wearing the eye patch over his right eye, and a significant amount of gold and diamond jewelry.

Harald Lesch (born 28. July 1960 in Gießen, Hesse) is a German physicist, astronomer, natural philosopher, author, television presenter, professor of physics at the Ludwig Maximilian University of Munich (LMU) and professor of natural philosophy at the Munich University of Philosophy.

After completing secondary school in 1978 at the Theo-Koch-Schule in Grünberg, Hesse, Lesch studied physics at the University of Giessen, then at the University of Bonn, where he completed his doctoral degree in 1987 and worked at the Max-Planck-Institute for Radio Astronomy. From 1988 to 1991 he was a research assistant at the state observatory at Heidelberg-Königstuhl. In 1992 he was a visiting professor at the University of Toronto. In 1994 he was habilitated at the University of Bonn.

Since 1995 Lesch has been a professor of theoretical astrophysics at the Institute for Astronomy and Astrophysics at the LMU Munich. Additionally, he teaches natural philosophy at the University for Philosophy in Munich. His main areas of research are cosmic plasma physics, black holes, and neutron stars. He is the expert on astrophysics in the Deutsche Forschungsgemeinschaft (DFG) (German Research Society) and a member of the Astronomische Gesellschaft (Astronomical Society). He is also a textbook author.

Renzo Piano, Ufficiale OMRI (born 14 September 1937 in Genoa) is an Italian Pritzker Prize-winning architect. Architecture critic Nicolai Ouroussoff said of Piano's works that the "...serenity of his best buildings can almost make you believe that we live in a civilized world."

In 2006, Piano was selected by TIME as one of the 100 most influential people in the world. He was selected as the 10th most influential person in the "Arts and Entertainment" category of the 2006 Time 100.

Piano was born in Genoa, Italy, in 1937 into a family of builders. He was educated and subsequently taught at the Politecnico di Milano. He graduated from the University in 1964 and began working with experimental lightweight structures and basic shelters. From 1965 to 1970 he worked with Louis Kahn and Z.S. Makowsky. He worked together with Richard Rogers from 1971 to 1977; their most famous joint project is the Centre Georges Pompidou in Paris (1977). He also had a long collaboration with the engineer Peter Rice, with whom he shared a practice (L'Atelier Piano and Rice) between 1977 and 1981.