trip the light fantastic

Verb

 * 1) To dance or to move rhythmically to musical accompaniment, especially in a graceful or nimble manner.
 * 2) * 1978 May 31, "Movies", in the St. Petersburg Independent, page 11-B:
 * "Swing Time:" Fred Astaire and Ginger Rogers trip the light fantastic in this yarn about a dancer with a yen for gambling.