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Unformatted text preview: parallel motion is when people sing the same melody at different pitch levels, other than the octave. Oblique motion is when one part remains at a fixed pitch while another part moves. 7. What is a cadence? What is the difference between a authentic cadence and a plagal cadence?: A cadence is two or more chords that works to shape a musical line. They are like punctuation. The difference between authentic cadence and plagal cadence is that the authentic cadence is a progression from the dominant V chord to the tonic (I chord), and the plagal goes from the subdominant IV chord to the tonic (I chord) 8. Describe the structure of the 12-bar boogie-woogie progression. I-I-I-I-IV-I-I-V-IV-I-I...
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- Spring '10