Carl Ruggles
American composer Charles Sprague Ruggles (
March 11, 
1876 - 
October 24, 
1971), beter known as 
Carl, wrote finely-crafted pieces using "
dissonant counterpoint", a term coined by Charles Seeger to describe Ruggles' music. Friends with 
Henry Cowell, 
Edgard Varese, and Charles Seeger, he wrote painstakingly slowly so his output is relatively small.  His compositions include 
Angels, 
Sun-treader, 
Organum, 
Men and Mountains, and 
Exaltation.
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