Count Basie and His Orchestra are the performers at a boogie woogie dance contest, whose tag line is "start fast - try to last".
Count Basie kicks off the dance contest by introducing the contest to the plethora of dancer. With the orchestra playing a breakneck boogie woogie beat, the competing couples, hitting the dance floor, stay true to that tag of "starting fast". The question then becomes how long the dancers will last in what is supposed to be this marathon.
—Huggo