By Mike Dunn

PHILADELPHIA (CBS) — Ten months after Philadelphians broke the world record for the longest “Soul Train” dance line (see related story), Mayor Nutter accepted the official certificate from the Guinness Book of World Records.

It was ten months ago — February 13, 2012 — that hundreds of Philadelphians braved the cold weather and assembled on the Art Museum steps to honor the late “Soul Train” host, Don Cornelius.

(Dancers form a record-breaking “Soul Train” line in Philadelphia. Credit: Cherri Gregg)

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When they were done, a new record had been set: 291 people had strutted down the Soul Train line to the sound of the TV show’s theme song, a new record certified by the Guinness Book of World Records.

Accepting the honor today at City Hall was one of the dancers, Michael Nutter.

“It was an incredible experience I’ll certainly never forget,” Hizzoner said.  “You could absolutely feel the unity out there that day, and it really felt like the whole city had come together for this one unique moment.”

And Nutter vowed to have the city defend the record if anyone tries to break it.