Crossword puzzle clue "popular twosomes"

ITEM, to set down the particulars of, also ITEMISE, ITEMIZE

ADAGIO, a piece of music to be played slowly

to put into an ark (a coffer)

AXLE, a shaft upon which a wheel revolves

BEAST, to punish or torture (someone) in a manner that involves excessive physical exercise

COUPLE, to unite in pairs

DUAD, a pair, also DYAD

DUET, to perform a duet