The good news is: it's NOT cancelled! But public health still comes first.
Due to the ongoing Corona virus outbreak, with social life in the Netherlands being restricted to a minimum since Monday 23rd, the organisers of the "Flashback 20/20 feat. Amiga 35" event, originally to be held on June 27th/28th, have decided to postpone it to September 12th/13th 2020. According to the announcement, event tickets will remain valid for the new dates. It is recommended to reach out to your travel booking partners, if required.