Langsamer Satz
A. Webern
(1883-1945)
The “Langsamer Satz” dates from 1905; Webern intended to write an entire quartet but put it aside after completing this “Slow Movement”.

String Quartet op.41 no.1
R. Schumann
(1810-1856)
I.Introduzione: Andante espressivo – Allegro
II.Scherzo: Presto – Intermezzo
III.Adagio
IV.Presto

String Quartet no.15 op.132
L.v.Beethoven 
(1770-1827)
I.Allegro Sostenuto – Allegro
II.Allegro ma non tanto
III.Molto Adagio
IV.Alla Marcia, assai vivace
V.Allegro appassionato