Historical Dictionary of Modern and Contemporary Classical Music - Nicole V. Gagné - Google Books

https://books.google.de/books?id=ppHoEX_6v10C&pg=PA38&lpg=PA38&dq=%22Chester+Biscardi%22+1948&source=bl&ots=EfI8LQWERS&sig=53Gbb

In the last decade of the 19th century, modernist sensibilities reached a critical mass and emerged more frequently in music as composers began employing dissonance, polyrhythm, atonality, and densities. Conversely, many 20th-century composers eschewed…