Moderato From Three Pieces For String Quartet By Thomas R. Schadl

Moderato From Three Pieces For String Quartet is based on the motive B G# A C, that is transformed rhythmically. The work is a study on how the music starts with ambiguous tonality ends in the key of F Major. 

https://www.sheetmusicplus.com/title/20435816 and https://drive.google.com/file/d/1eQrXw2y7T3Gw0B8ieGD0vNAGu8Is0fb-/view