 Most American marches use (seemingly) simple chord progressions, but—using chromatic harmonies, sevenths extensions, and secondary dominants—composers often complicated their marches with interesting chords and rapid chord changes.The true "march music era" succeeded in the United States from the 1850s to the 1920s, and persisted through the 1940s as it slowly became shadowed by the coming of jazz in the U.S.Earlier marches by Handel, Mozart, and Beethoven tended to be parts of symphonies or movements in suites.