Conversation so far:
when did the Seekers return to australia?
In March 1967, The Seekers returned to Australia
Are there any other interesting aspects about the Seekers article?
In March 1967, The Seekers returned to Australia for a homecoming tour.
what was the Seekers' homecoming tour?
The homecoming tour included a performance at Music for the People at the Sidney Myer Music Bowl in Melbourne
did the Seekers win any awards?
In 1967, they were named as joint Australians of the Year – the only group thus honoured.

Question: how many people attended?
Self-contained rewrite: how many people attended the Seekers' homecoming tour?