Nambassa significantly expanded the concept of multiple open air staging , all running simultaneously at the one event . Out of the first 1978 three-day festival , the requirement of a second stage grew from the need to expand the entertainment program because of the resounding feedback from local performers and artists wanting to play at Nambassa . This became the " Aerial Railway " , a second fully operational stage with sound , lighting and management . Aerial Railway absorbed the overflow of performers from the Main Stage , and also acted as a venue for spontaneous performances or raves . This second option was integral to the Nambassa philosophy of promoting local music and arts . Although the Miami Pop Festival in December 1968 featured two simultaneous ' main ' stages , most of the early U.S. and European rock festivals , including Woodstock festival , Monterey Pop Festival and Isle of Wight Festival were predominantly single stage productions . The Nambassa 1978 festival had three stages ; 1979 saw this expanded to four ( including workshop stages ) , and the 1981 5-day celebration heralded five separate sound and lighting venues , all running at the same time . In 1981 , " Aerial Railway " was replaced with the " Open Air Theatre " and " Woozlebub " for children . The multiple staging concepts seem to be finally making a comeback in the 21st century as seen at the recent Big Day Out and Glastonbury festivals
Miami Pop Festival
Miami Pop Festival (December 1968)
Nambassa