Da Tweekaz at The Observatory is a live electronic concert headlined by Da Tweekaz, the Norwegian hardstyle duo known for high-energy, euphoric hardstyle sets. The performance takes place at The Observatory in Santa Ana, California, a well‑established Orange County music venue that also houses the smaller Constellation Room. The event is notable for the duo’s festival-style, crowd-driven shows and their prominence within the global hardstyle scene.