Louisville, KY recently had a big party to celebrate its newest monument, an 11-foot diameter, 2,300-pound disco ball, to commemorate the city’s longtime role as the capital of American disco-ball manufacturing.

The heyday of disco-balls was during the 1970’s, when disco dancing was so popular. The signature dance at the time was the hustle, a sort of swing with several variations that takes some skill to make it look and feel good, but the music’s strong beat often also brings lots of unskilled “freestyle” folks onto the dance floor. For Wilddancer, it was difficult to learn the dance figures just by watching, because of their strangely syncopated steps in comparison to the more common and intuitive east coast swing or west coast swing dances.

Disco’s popularity was also helped by the Saturday Night Fever movie starring John Travolta (with his white suit and signature pose), with the Bee Gees’ “Staying Alive” song. And it also got a boost from the funny send-up of “Staying Alive” from the movie Airplane!

The disco feeling and faster tempo of that song are much better matches to the figures of the hustle than those of “The Hustle” that is often played today by disk jockeys unfamiliar with the dance.