The Foundation X Optimal Mass
Esbirra Ibiza · Ibiza, Spain
22:00 – 04:00
Optimal Mass is an Ibiza-based drum and bass collective. It has held events at Esbirra Ibiza and WOM Radio Cafe - Word of Mouth, both in Ibiza, as well as Es Birra in Es Canar. Its bookings cover drum and bass and jungle, with Mark System, Kara (UK), Bailey, Nicky Soula and Filtah among the DJs featured.
In April 2024, Optimal Mass collaborated with London’s INTABEATS on a drum and bass and jungle event in Ibiza. The collective co-hosted a night with The Foundation at Esbirra Ibiza in October 2025. In June 2026, the collective returned to Es Birra for a session featuring Ben Westbeech.
