Tickets for Let's Rock Norwich! 2017 sold out earlier this week, but more have just become available.
Festival organisers have released 100 tickets which were donated by a sponsor.
Around 15,000 people are set to descend on Earlham Park on Saturday for the retro festival which will feature music from Howard Jones, Bananarama and Tony Hadley.
It is the ninth year of the festival tour which started small in the Berkshire village of Cookham attracting 900 people.
Norwich marks the midway point of the tour, which began in Cookham on May 17.
Steve Haywood, marketing manager for UK Live, the Berkshire firm behind Let's Rock Norwich!, said he is delighted at how well the event has been received in Norfolk.
'There will be 15,000 people there which is amazing for our first year in Norwich, we are really delighted,' he said.
Tickets for Let's Rock Norwich! 2017 cost £47.30 and are available to purchase here.
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