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The quality sound of singing birds strongly depends on testosterone. Unfortunately, most of the testosterone will be converted to estradiol by the aromatase enzyme. The study aimed to examine the potential of natural aromatase blockers for increasing the frequency and quality of canary chirps. Five adult male canaries, with bodyweight 25-30 g were used in the study. After being adapted for a week, birds were fed a mixture of aromatase blockers and canary seed for 20 days at a dose of 0.3 mg /30 g body weight. Quantities of a song using Hagemon touch methods were calculated by frequency of chirping for 10 minutes, whereas the quality of the song was counted by the periods of once chirping for 10 minutes. Recording begins when the bird is given standard feeding and repeated after treatment for 20 days. The results showed that the frequency of chirping before given a mixture of ingredients was 15.3 /10 min, after being treated with aromatase blockers the frequency increased up to 78.9 /10 min. The length of the tweet before treatment was