A sweltering summer night in the Netherlands, 1975: renowned jazz vocalist Sarah Vaughan gives a magnificent concert at the Laren Jazz Festival.

The recording of the festival was lost, though. For four decades, two tapes sat hidden in the archives of the Dutch institute for sound and vision.

A freezing winter evening in Victoria, 2017: that same concert, brought back to life after 40 years, is replayed at the Melbourne Recital Centre in a ephemeral, intimate performance.