Thus, the call to prayer on earth has been uttered billions of times, or even countless times. Another unique fact about the adhan is that it doesn't stop reverberating. This is due to the time difference in each country. Islam has spread throughout the world, including Indonesia, therefore, the call to prayer is pronounced in various versions. The version of the call to prayer is that there is a difference between one muadzin and another in terms of sound color, sound style, influence of local customs or culture, and so on.