"Advaitic" quantum fluctuations??  



 Long-range correlated temporal fluctuations in the beats of musical rhythms 
are an inevitable consequence of human action. According to recent studies, 
such fluctuations also lead to a favored listening experience. The scaling laws 
of amplitude variations in rhythms, however, are widely unknown. Here we use 
highly sensitive onset detection and time series analysis to study the 
amplitude and temporal fluctuations of Jeff Porcaro’s one-handed hi-hat pattern 
in “I Keep Forgettin’”—one of the most renowned 16th note patterns in modern 
drumming. We show that fluctuations of hi-hat amplitudes and interbeat 
intervals (times between hits) have clear long-range correlations and 
short-range anticorrelations separated by a characteristic time scale. In 
addition, we detect subtle features in Porcaro’s drumming such as small drifts 
in the 16th note pulse and non-trivial periodic two-bar patterns in both hi-hat 
amplitudes and intervals. Through this investigation we introduce a step 
towards statistical studies of the 20th and 21st century music recordings in 
the framework of complex systems. Our analysis has direct applications to the 
development of drum machines and to drumming pedagogy.

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