Related Clues:

• Laurel's wreathing South Africa's poetry
• 'She came. And sang to me the whole / Of those three - that you made' (Tennyson)
• What 'America' has four of
• They make up poetry
• Rondeau trio
• 'The Star-Spangled Banner' quartet
• Triplets, quatrains, etc
• Some have ABAB rhyme schemes