[jeffbee]

According to the article it would seem to be a matter of just throwing in as much variety of tone, inflection, and articulation as you can manage. The don't understand what you're saying anyway.

My career as a singer-to-babies was heavy on the Broadway tunes. "On the Street Where You Live" was big.

[ghostpepper]

There is something magical about hearing a toddler mumble out an entire verse of Fly Me To The Moon or Autumn Leaves