Neanderthals
... that Steven Mithen speculates that the Neanderthals had a musical linguistic system which he calls "hmmmmm"?
... that <a href="./Steven_Mithen" id="mwA2Y" rel="mw:WikiLink" title="Steven Mithen">Steven Mithen</a> speculates that the <b id="mwA2c"><a href="./Neanderthal_behavior" id="mwA2g" rel="mw:WikiLink" title="Neanderthal behavior">Neanderthals</a></b> <i id="mwA2k">(rendition pictured)</i> had a musical <a href="./Historical_linguistics" id="mwA2o" rel="mw:WikiLink" title="Historical linguistics">linguistic system</a> which he calls "hmmmmm"?