Music has been widely used in the practice of aerobic exercises in the sports industry. The purpose of this study was to compare the effect of different intensities of music on heart rate (FC) and perceived exertion (PE) during standardised exercise on a cycloergometer. 13 men and 5 female volunteers, physically active (age 20.6 ± 2.2 years) performed a test under three conditions on different days, assigned in a counterbalanced design of repeated measurements: no music (NM), music at 70 dB, (M70) and music at 85 dB (M85). They exercised for 20 min. with a predetermined constant workload and equivalent to 80 % of their FCmax (kp = 1.47 ± 0.4, 90 rev/min). The music used was of the type ‘Merengue House’ in Spanish with a tempo of 131 ± 4.30 bpm, the different intensities were calibrated with a sonometer. The FC and EP were recorded at 10 and 20 min. with a monitor from FC Polar and Borg’s EP-15 scale. Test FC 10 min. FC 20 min. EP 10 min. EP 20 min. NM 164.78 ± 8.37 172.11 ± 8.54 12.06 ± 1.92 13.78 ± 2.58 M70 165.11 ± 11.16 173.00 ± 12.05 12.00 ± 2.11 13.56 ± 2.89 M85 163.00 ± 7.58 170.17 ± 7.87 11.50 ± 1.55 12.94 ± 2.07 Both for FC and for EP an ANOVA 3 x 2 with repeated measurements indicated that the averages at 20 min. were significantly higher than at 10 min. (p0.05). The results indicate that the ranges of music intensities studied M70 and M85 did not produce an effect on EP and FC when standardised exercise was performed on a cycloergometer compared to a condition without NM music.