Four Billion Years
Four Billion Years Introduction
David introduces his song, which is a moving plea for humans to take care of Earth and its life-forms. Free to watch. Downloadable version included in the Portfolio.
Four Billion Years Singalong
David and Stephanie perform the song. Full version free to watch if you are registered with Singtastic. Downloadable version included in the Portfolio.
Four Billion Years Tutor
David and Stephanie teach the song, phrase by phrase. Available only as a downloadable part of the Portfolio.
A moving plea for humans to take care of Earth and its life-forms.
