This repeats until one side concedes or a third party can determine the winner.
Later, it would evolve into a judged competition, consisting of multiple rounds of singing between competitors.
Competitors would be judged more favorably if they could continue a theme through multiple rounds.
[1] The poet Theocritus relied heavily on Amoebaean singing, with it becoming his and his successors' "hallmark", according to David M.
[1][2] Comatas The Muses bear me greater love than Daphnis ere did see; And well they may, fort’other day they had two goats for me.