SOURCE DETAILS Event: Aachen Open Air Pop Festival Location: Hauptstadion, Aachen, West Germany Dates: July 10–12, 1970 Attendance: 30,000–40,000 Organisers: Golo Goldschmitt, Walter Reiff, Karl‑August Hohmann Main Investor: Coca‑Cola Ticket Prices: DM 15 (single day), DM 40 (three‑day pass) FESTIVAL CONTEXT The Aachen Open Air Pop Festival — commonly known as the Soersfestival — was one of West Germany’s major early‑1970s open‑air rock gatherings. Conceived by three local