 (musical sleigh ride) calls for bells and whips in addition to a rich orchestra.His oeuvre was extensive, but only recently have scholars begun to assess the scope or the quality of it; much is lost, and it is not known how representative the surviving works are of his overall output.Cliff Eisen, who wrote a doctoral dissertation on Leopold Mozart's symphonies, finds in a Symphony in G major examples of his "sensitivity to orchestral colour" and a work that "compares favourably with those of virtually any of Mozart's immediate contemporaries".