Villanelles! A French verse form derived from an earlier Italian folk song; retains a circular pattern of a peasant dance.
five tercets rhyming aba
followed by a quatrain rhyming abaa
"The Waking" (Roethke)
"Missing Dates" (Empson)
"One Art" (Bishop)
"Villanelle for the Middle of the Night" (Osherow)