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A free all-ages concert will start at 2pm, followed by a licensed evening show at 7.30pm, both at Refuel bar.
More than 20 bands will feature in the two concerts, including the Chills, Ded Sparrows, Two Cartoons, Astro Children, Hunting Bears, Jo Little and Jared Smith, Males, Matt Langley, Prophet Hens, Puzzle Puppets and Tahu and the Takahes.
''It's a selection of the city's finest veterans, chart-toppers and audacious young tearaways,'' Dunedinmusic.com director Scott Muir said.
''We're celebrating the extraordinary musical talent that resides here in Dunedin, and it's also our way of saying thanks to the many, many people involved in our community.''
The all-ages concert is on from 2pm to 5.30pm and the licensed concert from 7.30pm till 1.30am.