2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/159723Detrended Fluctuation Analysis (DFA), suitable for the analysis of nonstationary time series, is used to investigate power law in some of the Bach's pitches series. Using DFA method, which also is a well-established method for the detection of long-range correlations, frequency series of Bach's pitches have been analyzed. In this view we find same Hurts exponents in the range (0.7-0.8) in his Inventions and sinfonia.5 pages, 4 figuresComputational PhysicsData Analysis, Statistics and Probabilitytext