Introduction: The literature has briefly described the association between auditory stimulation and the cardiovascular system. In this context, it is known that exposure to auditory stimulus of the classic musical for eight weeks improved cardiac autonomic regulation, by analysis of heart rate variability (HRV). Moreover, heavy metal music style is related to stress responses. Thus, it is thought that exposure to this style of music can contribute to the development of cardiovascular disease. Our object is to investigate the association between the intensity of the music and HRV. Method: Eight healthy male subjects aged between 18 and 30 years were analyzed. All procedures were approved by the Ethical Committee in research of our Institution. It was excluded subjects who had disorders of hearing sensitivity, cardiorespiratory, neurological and other impairments known that avoided the subject performing the procedures, treatment with drugs that influence cardiac autonomic control and people involved with music (dancing, singing or musical instruments). We evaluated the linear HRV indices in the time domain and the frequency and low frequency. The subjects were exposed to musical auditory stimulation musical of classical baroque and heavy metal styles. Initially HRV was recorded at rest for 10 minutes. Subsequently the subjects were exposed to auditory stimuli musical equivalence of the following levels: 60-70 dB, 70-80 dB and 80-90 dB. Each exposure lasted five minutes and there was an interval of five minutes between each exposure. Results: In relation to the time-domain index, we did not observe significant changes during exposure to classical and heavy metal musical auditory stimulation. The SDNN index tended to be reduced during heavy metal music style exposure at 80-90 dB (59.6+33 ms) compared to the control condition (73.5+41 ms), however, there was no statistical significance (p=0.4). Similar responses were observed during classical baroque musical auditory stimulation at 80-90 dB (50.6+23 ms) compared to control (60.9+32 ms) (p=0.6) We found no significant changes regarding the RMSSD and pNN50 indices related to the time-domain analysis. With respect to the frequency-domain analysis, we found no significant changes regarding the LF and HF in absolute and normalized units (p>0.05). Conclusion: There was no significant influence of musical auditory stimulation in different equivalent sound levels on the HRV. We believe this is due to the small population evaluated