Here are some ideas
Different ways of thinking about a single voice
In 1912, Filipo Tommaso Marinetti, founder of Futurism in Italy, published Zang Tumb Tumb, partly prose, words, phonemes that suggest the sounds of the impending First World War.
Steve Reich composed It’s Gonna Rain in 1964 after recording Brother Walter, a Pentecostal preacher, in San Francisco’s Union Square.
Leigh Landy‘s Rock’s Music, composed in 1988, is based on snippets of texts by Gertrude Stein.
Different ideas with several voices
Shumaila Hemani composed Forgotten Ways of Thinking in 2010 (follow this at Ear to the Earth).
Joe Kubera and Joel Chadabe spent time in Staten Island for Ear to the Earth 2011. Here’s a simple mix of the sounds in several ethnic restaurants.
In 2014, Georgia Spiropoulos, in Paris, asked friends to read bits of Walt Whitman’s Leaves of Grass in their native languages. She then created Vocalscapes. Note the image of Walt Whitman above.