"Peter T. Daniels" wrote:
> "Joe Roberts" wrote:
>> Couldn't there have been a time when, say,
>> lamenting became chorused among the family
>> or tribe, and joy with laughter turned to humming
>> or whistling? And then maybe somebody started
>> thumping something to augment it?
> Many primates thump things rhythmically.
>
> All motile animals move rhythmically.
There's a chicken-and-egg condition: before the babe became a child and motile, his mum must've cooed to him. But there had been her heartbeat, perceived in the womb. It's doubtful he remembered that rhythm later as she encouraged him to walk, perhaps through vocalized intonation that was a bit more pitch-based than guttural grunts. Does an upward glissando convey different feeling from a downward one?
Joe