---
id: evt_qrJI1BE9
status: live
title: John Heffron
summary: 'John Heffron: performing art at Isar Philharmonic in Brookfield on October
  4, 2026.'
category: performing-arts
tags:
- theaterevent
start: '2026-10-04T14:00:00-04:00'
end: '2026-10-04T19:59:59-04:00'
timezone: America/New_York
venue:
  id: ven_NukP9O1N
  name: Isar Philharmonic
  address: 8 Hans-Preißinger-Straße
  lat: 0.0
  lng: 0.0
  h3_r8: 88754e6499fffff
  geocode_confidence: 0.9
city:
  slug: brookfield
  name: Brookfield
  country: us
is_online: false
price:
  min: null
  max: null
  currency: null
  is_free: null
tickets_url: https://www.captainticket.com/WI/Brookfield-Events/Cheap-John-Heffron-Tickets-Milwaukee-Improv-2026-10-04-18-00-00-3424436
sources:
- source_id: src_jcgRZ7Zg
  url: https://www.captainticket.com/WI/Brookfield-Events/Cheap-John-Heffron-Tickets-Milwaukee-Improv-2026-10-04-18-00-00-3424436
  first_seen: '2026-10-03T22:11:42Z'
  last_seen: '2026-10-03T22:11:42Z'
quality_score: 0.5683
confidence: single_source
last_verified: '2026-10-03T22:11:42Z'
canonical: https://staging.eventindex.ai/us/brookfield/e/john-heffron-evt_qrJI1BE9
---

# John Heffron

John Heffron: performing art at Isar Philharmonic in Brookfield on October 4, 2026.

## Key facts
**When:** Sun Oct 4, 14:00–19:59 (America/New_York)
**Where:** Isar Philharmonic, 8 Hans-Preißinger-Straße
**Tickets & details:** https://www.captainticket.com/WI/Brookfield-Events/Cheap-John-Heffron-Tickets-Milwaukee-Improv-2026-10-04-18-00-00-3424436
**Category:** performing-arts

## Getting there
8 Hans-Preißinger-Straße. Coordinates: 0.00000, 0.00000.

Verified against 1 source, last checked October 3, 2026. EventIndex.ai — the open events layer for AI.