Bartók: String Quartet No.4, Sz.91, BB.95

Béla Bartók (1881-1945): String Quartet No.4, Sz.91, BB.95 (1928)
The quartet has five movements:
I.    Allegro
II.   Prestissimo, con sordino
III. Non troppo lento
IV.  Allegretto pizzicato
V.   Allegro molto