Under the Ossi 2026: A festival day under the OWD conquers Bielefeld
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Under the Ossi 2026: Bielefeld's new cultural festival takes the city under the OWD by storm
On September 19, 2026, Under the Ossi celebrates its premiere in Bielefeld-Mitte and transforms the space under the Ostwestfalendamm into a vibrant festival ground. The participatory cultural festival blends open air, club culture, and urban space in a way that immediately stands out in OWL: three outdoor and two indoor stages, live concerts, DJ sets, workshops, and official aftershow parties turn the day into a multi-day experience in the mind, even if it remains a festival day calendar-wise. ([untermossi.de](https://untermossi.de/))
A festival from the city for the city
Behind the project are players from the free Bielefeld cultural scene, who develop Under the Ossi as volunteers and deliberately design it as an open, participatory format. The city of Bielefeld describes the festival as a cultural model project that brings together the free scene, urban society, and universities, opening up urban spaces. This is exactly where the special appeal arises: It’s not about smooth standards but about community feeling, local anchoring, and the courage to rethink an unusual place. ([untermossi.de](https://untermossi.de/))
Line-up between rock, rap, hyperpop, and DJ culture
Musically, Under the Ossi relies on a wide range: The program includes, among others, Picturebooks, Jugo Ürdens, Tujamo, Girlwoman, Dead Years, Bellyacher, Crazie Nabz, Apeiro, and many more acts from rock, pop, blues, post-punk, hyperpop, rap, funk, hip-hop, and electronic formats. The result feels not arbitrary, but rather curated as a scene mix with a clear stance: up-and-coming talents, regional forces, and national names come together to give the festival a lively, urban pulse. ([untermossi.de](https://untermossi.de/))
Festival atmosphere between OWD, workshops, and aftershow night
The grounds open at 1:30 PM, and the first live concerts start at 2:00 PM. In addition, workshops like supervised painting, screen printing, and DJ basics are offered, along with an awareness concept with a fixed point of contact and largely barrier-free access. Food and drinks are available on-site, and card payment is possible at many stands. Those who want to make the most of the day can stay until late at night: With the festival ticket, there is free access to the aftershow locations Cutie, Plan B, The Good Hood, and Stereo, with some clubs also open without a ticket. ([untermossi.de](https://untermossi.de/))
Tickets, Solidarity Offers, and Arrival
Ticket prices officially start at 15 euros for the early bird discounted ticket; the regular early bird ticket costs 19 euros, standard tickets cost 19 euros reduced and 25 euros regular, each plus pre-sale fees. Solidarity tickets for people with a Bielefeld pass are available for 5 euros via Kulturöffner Bielefeld. The organizer recommends arriving by bus, train, or bicycle; if driving, the public parking garages and parking spaces in the city center should be used. Re-entry with the same ticket is not possible. ([untermossi.de](https://untermossi.de/))
Conclusion: Why Under the Ossi is more than just a debut
Under the Ossi brings fresh festival atmosphere to Bielefeld and focuses on what makes good festivals great: curated diversity, strong local anchoring, lively club culture, and a clear community thought. Those who experience the start of this new cultural format live will not get an interchangeable standard event but an urban festival with conviction, energy, and a real city feeling. ([untermossi.de](https://untermossi.de/))
Official channels of Under the Ossi:
- Instagram: https://instagram.com/untermossifestival
- Facebook: no official profile found
- YouTube: no official profile found
- TikTok: no official profile found
