This list of The Top 100 Disco Songs of All-Time had been previously listed as The Top 100 Dance Songs of All-Time. The re-calculating of the original dance charts had to be revised to include downloads and online internet sales, which changed the charts to a great degree.
You will see this list presented online in many different forms, but according to Billboard Publications, these are the official 2013 list of the Top 100 Disco Songs of All-Time. All information due to change in the future without notification.