One theory is that the first song was created by a Neanderthal man named Ötzi, who lived around 30,000 years ago. Ötzi's body was discovered in the Ötztal Alps in 1991, and he was found to be carrying a flute made from a vulture's wing bone. This flute is the oldest known musical instrument, and it is believed that Ötzi may have used it to create the first song.
Another theory is that the first song was created by a group of early humans in Africa around 100,000 years ago. This theory is based on the discovery of a set of bone flutes in the Blombos Cave in South Africa. These flutes are believed to have been used for musical purposes, and they may have been used to create the first song.
Still another theory is that the first song was created by a bird. Birds are known to have complex songs, and it is possible that one of these songs may have been the first song.
Ultimately, the question of who produced the first song is a mystery that will never be fully answered. However, the evidence that does exist suggests that the first song was likely created by a human, and that it may have been created as early as 100,000 years ago.