The line "Something there is that doesn't love a wall," where the rhythm feels like spoken English, emphasizing 'something' and 'wall' (Frost); The musicality created by a poet's unique mix of stressed and unstressed syllables that deviates from perfect meter but sounds harmonious; The pauses and momentum in a line of free verse that feel instinctively right to the reader's ear; The rise and fall of speech that is determined by the meaning and syntax of the words, rather than a fixed pattern;