Entry No. 111 — the Chicago file — filed under: free jazz
Elastic Arts
The address ends in "#208," which tells you most of what you need to know: this is a second-floor room up a staircase off Diversey, not a club. Elastic started in 1998 as a musicians' collective squatting shared space in Pilsen, incorporated as a nonprofit in 2002 out of a converted Humboldt Park church, and has since put on more than 3,000 events. Its stated mission is to book artists who are "not welcome elsewhere" — which in practice means the Thursday Improvised Music Series runs $15, or $10 with a student ID, paid at the door, for players who would cost four times that in a room with a coat check. The rest of the calendar is stranger still: Tone Glow experimental film screenings, the CLEAT series, Pleiades, Dark Matter takeovers, a night literally billed as Relative Intensity Noise. The door does not open until one hour before the show and stays shut otherwise, so there is no wandering in.
→ Three more underground music & performance in Chicago — never the same twice
The story
Elastic began in 1998 as a loose collective of Northwestern students and friends looking for somewhere to put on the shows nobody else would book. It incorporated as a nonprofit in 2002, by then operating out of a converted church in Humboldt Park, and has presented more than 3,000 events since — music, theater, readings, screenings, exhibitions. The spine of all of it has been the weekly improvised music series, which saxophonist Dave Rempis curated from 2002 until 2023: a twenty-one-year run that turned a Thursday in a rented room into one of the more dependable places in the country to hear free improvisation.
Today it lives at 3429 W. Diversey, Suite 208 — you climb a staircase to a second-floor room in a commercial building on a stretch of Avondale where nothing announces itself. Two co-executive directors, Ben Billington and Peter Gillette, run it; co-founder Samuel Lewis still directs the outreach programs, Camila Vick coordinates outreach and residencies, and Harlem West curates the visual gallery whose work hangs behind whoever is playing. The board runs past a dozen, many of them working Chicago musicians. It has adopted the We Have Voice Code of Conduct, the sort of paperwork a room this size only bothers with if it means it.
The mission statement is unusually blunt: space for artists “not welcome elsewhere,” meaning work too experimental or too far outside the identities the big institutions keep programming around. In practice that becomes a stack of named series — Improvised Music on Thursdays, Elastro on Fridays and Sundays, the monthly CLEAT, Pleiades on Wednesdays, Dark Matter on Saturdays for Black Chicago house — plus free Citywide Jazz Series nights attached to the Chicago Jazz Festival. The door opens an hour before each one and is otherwise shut.
What it's like
You find a street door on Diversey and go up. There is no lobby and no box office; somebody at a table takes $15, or $10 with a student ID, and then you choose a folding chair. In a room this size the second row is a genuinely different seat from the first, which is more or less inside the drum kit. Thursday sets typically start at 8:30 and run to about 10:30, usually two groups with a changeover between them. The listening is the etiquette: people do not talk through sets, and applause waits until a piece has clearly ended rather than chasing every solo. Musicians stick around afterward, often with records on a table. Since the door only opens an hour ahead, showing up early gets you the room rather than a queue on the sidewalk.
The move: Take the Thursday Improvised Music Series. Doors open at 7:30 for the 8:30 downbeat — get there at 7:30, pay the $15 at the door, and take folding chairs in the second row rather than the first, because in a room this size the first row is inside the drum kit. Sets typically run to 10:30. If you'd rather test the water for free first, the Citywide Jazz Series show tied to the Chicago Jazz Festival is a no-cover night in the same room.
📍 Before you go 3429 W. Diversey Ave., Suite 208 — second floor, walk-up, so factor in the stairs. Open only one hour before events or by appointment; there are no drop-in hours. Most Improvised Music Series shows are $15 / $10 with student ID, tickets at the door. Some series and outreach nights are free. Nearest transit is the Blue Line at Logan Square plus a walk, or the Diversey bus. Phone (773) 772-3616.
- 📍 Chicago
- 💸 $
- ⚡ Big night
- 🌗 Indoors
Where: 3429 W. Diversey Ave. #208, Chicago, IL 60647
Hours: Added 2026-08-26 — confirm current hours before you go.
⚠ Seasonal or scheduled — always check before you go.
Pair it with
- Covet Oddities & Macabre Gallery — Four blocks east on the same street at 3057 W. Diversey, and closed Tuesday and Wednesday — which makes a Thursday improvised-music night exactly the day both are open.
- Busy Beaver Button Museum — Free, open weekday afternoons until about 4, and a ten-minute walk south — a way to spend the daylight before a door that will not open until 7:30.
- Rosa's Lounge — A mile south on Armitage, where Tony Mangiullo has been running a Chicago blues room since 1984: the same neighborhood, the exact opposite argument about how a small stage should work.
More weird in Chicago
Good to know
How do I actually get in? The address has a suite number.
3429 W. Diversey Ave., Suite 208, on the Avondale edge of Logan Square. It is a second-floor walk-up in a commercial building, so budget for the stairs and for the fact that the street door only opens one hour before an event. There are no drop-in hours; visits at any other time are by appointment. Blue Line to Logan Square plus a walk, or the Diversey bus, both beat parking.
What does a night cost, and do I need to buy ahead?
The Thursday Improvised Music Series is $15, or $10 with a student ID, paid at the door — no advance purchase required. Other series price separately, and some outreach nights and the Citywide Jazz Series shows tied to the Chicago Jazz Festival are free. Check elasticarts.org/events for the specific night before you go.
Is it accessible if stairs are a problem?
The venue is on the second floor and Elastic does not publish accessibility details on its site, so call (773) 772-3616 before you commit. Staff answer the phone and the organization also takes appointments, which is the reliable way to sort out arrival logistics rather than discovering them at the bottom of a staircase.
What am I likely to hear if I just pick a random date?
It depends entirely on which series you land on. Thursdays are free jazz and spontaneous composition; Elastro (Fri/Sun) is electronics and studio manipulation; CLEAT is a monthly Friday of Chicago artists; Pleiades runs Wednesdays; Dark Matter takes Saturdays for Black Chicago house. The visual gallery is up regardless, and film screenings appear on the calendar too.
Is this a bar? Should I plan dinner around it?
No — it is a nonprofit performance space, not a club, and the room opens an hour before the downbeat and closes after. Eat first. Doors at 7:30 for an 8:30 Thursday start gives you a full hour inside, which is enough time to settle and pick a seat but not enough to treat as a dinner slot.
Plan a visit & invite your people →
Further reading: Official site
📷 We made a card for this one on Instagram →
last checked: 2026-08-26