iO Theater, known for its long-form improv, marks its 45th anniversary with a celebration named IO45 from November 5-7. Founded in 1981 as ImprovOlympic by Charna Halpern and improv trailblazer David Shepherd, the theater initially hosted team-based comedy contests.
Charna Halpern, after David Shepherd left Chicago in the 1980s, partnered with Del Close. Together, they pivoted the focus to long-form, storytelling improv, particularly a format called the ‘Harold.’ This format involves weaving disconnected scenes into a cohesive narrative.
Brad Pike, iO’s current creative director and performer with the Harold team Devil’s Daughter, noted the significant development of this art form over the years. IO45 showcases the expansion of the theater community over its four decades. Previously seen as a ‘boys’ club,’ iO Theatre now mirrors wider societal diversity.
Pike noted, ‘We offer various improv types for diverse audiences, which enhances the art form’s accessibility.’
IO45 emphasizes seasoned performers who pioneered long-form improv, alongside newer additions who continue its evolution. Past anniversary events celebrated iO alumni who transitioned from stage to screen. In contrast, IO45 focuses on those maintaining daily performances on Kingsbury Street.
The festival’s lineup includes teams like Improvised Jane Austen, Escándalo, and Stir Friday Night. This diversity showcases different cultural perspectives and talents. Stir Friday Night, formed through a sketch show led by Jason Chin, is pivotal to iO’s history. The team features notable alumni like Danny Pudi and Steven Yeun.
Jonathan Lee-Rey, Stir Friday Night’s executive artistic director, emphasized the importance of their AAPI-focused showcases. By connecting Asians in improv, these sessions foster broader community ties. He stated, ‘It creates a space for AAPI players to connect with one another and beyond.’
Live interactions distinguish improv from scripted sketch comedy. Brad Pike pointed out the distinctive element of improvised shows – real-time creation with active audience engagement.
Festival highlights include The Scene with T.J. Jagodowski, 3 Square featuring John Lutz, and Frank Booth from the ’90s Harold team era. Additionally, there will be a stand-up performance by Maggie Winters and a panel discussion with Charna Halpern and performers from iO’s early days.
Pike stressed the irreplaceable nature of iO’s community-driven focus. The talent of performers is central to the theater’s offerings, ensuring the content remains unique and irreplaceable.
IO45 will be held at iO Theater, 1501 N. Kingsbury St., from November 5-7. Tickets and further details are available at ioimprov.com/io45.

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