Only human can speak words in the kingdom of animal. According to scientists man began to speak from 30 thousand to 1 lac year ago. Let us discuss the matter in scientific ways. Before learning to talk man would exchange their intentions by moving hand or by other parts of body. This was body language. But at the time of excitement, high sound would come out from throat. At the time of expressing fear, sorrow, angerness, glad the sounds would in defferent types. In course of time the different sounds became meaningfull. For the increasing utilisation of throat the voice system developed. The number of meaningfull sounds increased. For perfect expressing, man uttered many sounds. The meaningfull sounds became meaningfull words. This was the primary developed form of speaking or talking. Different words or languages were created in different places of the world. According to scientist Charls Darvin man had a tail. For the change of activity, the use of tail became inactive and it about abolished. Again for the increament of throat utilisation, the voice system developed. Now we can hear sweet songs for the developement of voice chord. The song lead us to another world of sweetness.