Complex sentence: He studied with Schoenberg from 1917 to 1918, with Berg from 1918 to 1924, and prepared the piano-vocal score for Berg's "Wozzeck" and the piano score of Berg's "Chamber Concerto".
Split into simpler sentences: He studied with Schoenberg from 1917 to 1918 and with Berg from 1918 to 1924. He prepared the piano-vocal score for Berg's "Wozzeck" and the piano score of Berg's "Chamber Concerto".