In its purest form, the dialogue, action, story, and characters are created collaboratively by the players as the improvisation unfolds in present time, without use of an already prepared, written script.
Improvisational techniques are often used extensively in drama programs to train actors for stage, film, and television and can be an important part of the rehearsal process.
[5][6] Many of the current "rules" of comedic improv were first formalized in Chicago in the late 1950s and early 1960s, initially among The Compass Players troupe, which was directed by Paul Sills.
From most accounts, David Shepherd provided the philosophical vision of the Compass Players, while Elaine May was central to the development of the premises for its improvisations.
[5][6] Many of the original cast of Saturday Night Live came from The Second City, and the franchise has produced such comedy stars as Mike Myers, Tina Fey, Bob Odenkirk, Amy Sedaris, Stephen Colbert, Eugene Levy, Jack McBrayer, Steve Carell, Chris Farley, Dan Aykroyd, and John Belushi.
In 1979, Elk brought shortform to England, teaching workshops at Jacksons Lane Theatre, and he was the first American to perform at The Comedy Store, London, above a Soho strip club.
Some of this work led to pure improvisational performance styles, while others simply added to the theatrical vocabulary and were, on the whole, avant-garde experiments.
Joan Littlewood, an English actress and director who was active from the 1950s to 1960s, made extensive use of improv in developing plays for performance.
[7] In 2012, Lebanese writer and director Lucien Bourjeily used improvisational theater techniques to create a multi-sensory play entitled 66 Minutes in Damascus.
[9] The form relies on social media to engage audiences in the creation of dynamic fictional scenarios that evolve in real-time.
Shortform improv consists of short scenes usually constructed from a predetermined game, structure, or idea and driven by an audience suggestion.
Longform shows may take the form of an existing type of theatre, for example a full-length play or Broadway-style musical such as Spontaneous Broadway.
[10] Longform improvisation is especially performed in Chicago, New York City, Los Angeles, Austin, Dallas, Boston, Minneapolis, Phoenix, Philadelphia, San Francisco, Seattle, Detroit, Toronto, Vancouver, and Washington, D.C., and is building a growing following in Baltimore,[11] Denver, Kansas City, Montreal, Columbus, New Orleans, Omaha, Rochester, NY,[12] and Hawaii.
Other forms of improvisational theatre training and performance techniques are experimental and avant-garde[13] in nature and not necessarily intended to be comedic.
The company, developing work through an improvisational process drawn from Chilton and Viola Spolin, created well-known exercises, such as "sound and movement" and "transformations", and originated radical forms and techniques that anticipated or were contemporaneous with Jerzy Grotowski's "poor theater" in Poland.
On the west coast, Ruth Zaporah developed Action Theatre, a physically based improvisation form that treats language, movement and voice equally.
Longform, dramatic, and narrative-based improvisation is well-established on the west coast with companies such as San Francisco's BATS Improv.
", Stanford professor and author, Patricia Ryan Madson notes, "executives and engineers and people in transition are looking for support in saying yes to their own voice.
The Marx Brothers were notorious for deviating from the script they were given, their ad libs often becoming part of the standard routine and making their way into their films.
This Is Spinal Tap and other mockumentary films of director Christopher Guest were created with a mix of scripted and unscripted material.
Blue in the Face is a 1995 comedy directed by Wayne Wang and Paul Auster created in part by the improvisations during the filming of Smoke.
Some of the best known American film directors who used improvisation in their work with actors are John Cassavetes, Robert Altman, Christopher Guest, and Rob Reiner.
It is the responsibility of the other improvisers to accept the offers that their fellow performers make; to not do so is known as blocking, negation, or denial, which usually prevents the scene from developing.
Some performers may deliberately block (or otherwise break out of character) for comedic effect—this is known as gagging—but this generally prevents the scene from advancing and is frowned upon by many improvisers.
Because improvisers may be required to play a variety of roles without preparation, they need to be able to construct characters quickly with physicality, gestures, accents, voice changes, or other techniques as demanded by the situation.
From the 1990s onwards a growing number of European Improv groups have been set up specifically to explore the possibilities offered by the use of the abstract in improvised performance, including dance, movement, sound, music, mask work, lighting, and so on.
[27] Notable alumni of the BNW include Louie Anderson, Mo Collins, Tom Davis, Al Franken, Penn Jillette, Carl Lumbly, Paul Menzel, Pat Proft, Annie Reirson, Taylor Nikolai, Nancy Steen, Peter Tolan, Linda Wallem, Lizz Winstead, Peter MacNicol, Melissa Peterman, and Cedric Yarbrough.
Some key figures in the development of improvisational theatre are Viola Spolin and her son Paul Sills, founder of Chicago's famed Second City troupe and originator of Theater Games, and Del Close, founder of ImprovOlympic (along with Charna Halpern) and creator of a popular longform improv format known as The Harold.
Others include Keith Johnstone, the British teacher and writer–author of Impro, who founded the Theatre Machine and whose teachings form the foundation of the popular shortform Theatresports format, Dick Chudnow, founder of ComedySportz which evolved its family-friendly show format from Johnstone's Theatersports, and Bill Johnson, creator/director of The Magic Meathands,[28] who pioneered the concept of "Commun-edy Outreach" by tailoring performances to non-traditional audiences, such as the homeless and foster children.
His work was grounded in the lessons he learned as an improviser at The Committee with Del Close, as well as in his experiences as founding director of The Groundlings.