Between approximately 4,500 and 2,500 B.C, the ancestors of much of Europe and Asia once spoke the same mother tongue, a language referred to as Proto-Indo-European, or PIE. Although there is no written record of such a language, linguist Dr. Andrew Byrd recently attempted to reconstruct his own recordings of PIE language for Archaeology magazine, building off three centuries' worth of scholarly work on the topic.
Read more (and listen to a bit):
Is This How Our Ancestors Sounded? Linguist Recreates Proto-Indo-European Language (AUDIO)