YN Summer Sesh

Two separately dated editions (2025 and 2026), a consistent electronic/open-air identity, current listings promoter attribution and an identified 2026 legal organiser meet the classification-4 threshold. The series is still young and its known editions are seasonal by format, so it should be manually monitored for a third edition or a wider multi-host programme. This recommendation concerns the recurring brand, not the temporary Gleis19 host.