The Gympie Music Muster has been cancelled for a second year in what would have been the event's 40th anniversary.
Organisers made the announcement on Thursday night citing the escalating risks of the current COVID-19 outbreaks across the country.
"Our 40th celebration was shaping up to be the best Muster ever," a statement said.
"Ticket sales have exceeded all our expectations with a third of our patrons coming from interstate.
"Patrons, sponsors and vendors funds are not ours until such time as we are able to deliver our event.
"Financially the event relies on unrestricted travel to and within the Queensland for patrons, artists and suppliers.
"We are a Not-For-Profit organisation and the current situation and the uncertain future poses an unacceptable financial risk. Unless the event can be delivered with a full program and with unrestricted interstate attendance, we cannot deliver value for our patrons and guarantee payment to our suppliers.
"In the event of a late cancellation or any sudden lockdown we simply could not refund tickets and pay suppliers which would be financially catastrophic for the future of the event."
All current ticketholders will be offered to transfer their tickets to the 2022 event scheduled for August 25 to 28.
This year's Muster was set to be headlined by the likes of Lee Kernaghan, Kasey Chambers, Adam Brand and Troy Cassar-Daley.
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