Original sentence: Many of the best classical musicians such as Bach, Händel,  Beethoven, Schumann, Brahms, Wagner, Mahler, or Schoenberg (a lineage labeled the "German Stem" by Igor Stravinsky) were German
Edited sentence: Many of the best classical musicians such as Bach, Händel,  Beethoven, Schumann, Brahms, Wagner, Mahler, or Schoenberg (a lineage labeled the "German Stem" by Igor Stravinsky) were German and some of the most famous