Ernst Toch - String Quartet No. 12, Op. 70 (1949)
Performed by the Verdi Quartet
Movement One: Calmly and evenly flowing, with utmost tenderness and intimacy - 0:00
Movement Two: Adagio - 7:11
Movement Three: Pensive serenade - 14:15
Movement Four: Vigorous - 20:03
Source of Audio - https://www.youtube.com/watch?v=xmRRz7JOqC0