Related Clues:

• Trip the light fantastic
• Hint to the start of 17-, 31-, 46- and 61-Across
• Hop
• Mazurka, e.g.
• Macarena, e.g.
• Ball, e.g.
• Have a ball?
• Lively party
• Bop
• Hustle, for one
• Terp sichore's realm-
• Some fancy footwork
• 1-Down, e.g.
• Word with folk or tap
• Terpsichore's forte