Related Clues:

• da-DAH
• "I put my ___ in my mouth" Billy Joel
• Poetic unit of rhythm
• Trochee's counterpart
• The measure of a Labour leader
• One of three in "To be or not to be"
• Take care of, as the bill
• Base pay
• One end of a bed
• Pound foot?
• Foot in a line of poetry
• Yew, say, outside old church is a poetic feature
• One-fifth of 'If music be the food of love, play on'
• Metrical short-long foot
• and 22 Across: Perhaps Methuselah's coming in for infantryman