Last week a charity fundraiser took place at Omnia in Las Vegas. Some of Hakkasan’s biggest resident djs including Kaskade, Tiesto, Zedd and Steve Aoki played for free and Celine Dion made a surprise appearance as well to sing with Aoki! Other who spun the event included NGHTMRE, Cash Cash and Party Favor. While Calvin Harris did not make an appearance he did donate has booking fee (said to be well into the 6 figures) and Diplo donated $100,000.