This problem has been limited to a study of the largest form among Grieg's piano compositions, the Piano Concert in A Minor. References are made to his smaller piano pieces, for the concerto has proved representative of his style of composition and, being one of his earlier works, it reflects a vigor and enthusiasm not present in his later work. Rhythm is discussed with relationship to the harmony and melody in the sections devoted to these two elements. The present study does not include consideration of the orchestral score and its relationship to the piano part.