Complex sentence: He nevertheless had time to compose several impressively Romantic works (bearing above all the influence of Robert Schumann), including pieces for piano, chamber music, mélodies, a piano concerto, and Symphonic Sketches.
Split into simpler sentences: He nevertheless had time to compose several impressively Romantic works (bearing above all the influence of Robert Schumann). These works included pieces for piano, chamber music, mélodies, a piano concerto, and Symphonic Sketches.