density and disposition of musical lines
same sound. all voices move at the same time.
many sounding. two or more simultaneously sounding lines
voices duplicate some portion of previous voice
voices exactly duplicate preceding voices
each line melodically independent of any other
purposeful organization of music
one sounding. single line of music, no accompaniment. unison
principle of form. identified by same letter
principle of form. sections labeled B, C, D...
principle of form. given superscript B1, A1....
2 contrasting units. sections often repeated
b section in contrasting style. third section, A, repeats the opening
refrain alternates with contrasting music. one of oldest musical forms. simple style.
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