Many composers of the Impressionist era wrote harmonies
consisting of chords that moved in _______ motion.
Here are a number of sites that will help you with that.
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To find the answer to your question, you can start by researching the characteristics and techniques of composers from the Impressionist era. By studying this musical period, you can learn about their unique approach to harmony.
The Impressionist era in music, which flourished during the late 19th and early 20th centuries, was known for its emphasis on atmosphere, color, and evocative imagery. Composers of this era sought to evoke moods and impressions rather than telling a linear story or following traditional harmonic progressions.
One characteristic of Impressionist harmonies is the use of "parallel motion" or "parallel chords." This refers to chords moving in the same direction, with the individual voices of the chord staying at the same interval relationship. In other words, the distance between the pitches of each note in the chord remains the same as the chord progresses.
This technique gives a sense of fluidity and color to the music, as the chords change but maintain a similar sonic character. Parallel motion is often used to create shimmering, dreamy, and ethereal textures, which were characteristic of the Impressionist style.
Therefore, to answer your question, many composers of the Impressionist era wrote harmonies consisting of chords that moved in parallel motion.