Modern classical music is music written in the 20th century and beyond. Although much of it draws heavily on earlier forms, modern composers also experimented with rejection of long-held ideas; notably, Arnold Schoenberg questioned the traditional notions of harmony with his twelve-tone system[?], and John Cage questioned the very definition of music with his use of chance and found sounds.
... (hard palate[?]) (c, ch, j, jh, ~n)
Retroflex[?] (roughly the place of articulation of English alveolars like t, but with the tongue curled back) (t, th, d, dh, ...