By Tim Jimenez

By Tim Jimenez

PHILADELPHIA (CBS) – The switch will be flipped tonight on the Ben Franklin Parkway. It’s the first night of “Open Air” — an interactive light show that will be hard to miss.

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Open Air comes to Philadelphia thanks to Montreal-based artist Rafael Lozano-Hemmer.

“Basically what you will see is a canopy of light, like a roof of light, over all the Parkway.”

Delivered by 24 robotic spotlights, visible from 10 miles away on clear nights. And those lights will constantly change depending on you.

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“You can literally transform your city from your phone.”

If you download the Open Air iPhone app you can leave a voice message, it will be put in a queue and the system turns your message into lights.

“Graphical equalizer in a hi-fi, you know those little frequency bands that go up and down with your voice. it’s similar to that except it’s ten miles high.”

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You can also send the message on The light show runs from 8pm to 11pm each night until October 14.