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The countdown to the concert on the lake has started and vendors began arriving Thursday from all over the country.

Vendor Westin Pigott brought his product, the “Bev Barge,” to Austin. Pigott attends the event regularly and said thousands of people float in the water to watch concerts.

"We sponsored it last year. We wanted to come back and do it again this year. It's in Austin this year, so it should be a really good experience being next to a major city," Pigott said.

The only way to take part in AquaPalooza is to have a boat or a large flotation device, and you must register online. Click here to register.