Rock-a-Bye Baby

The video presents a lullaby about a baby in a cradle on a treetop. It describes how the cradle rocks with the wind and eventually falls when the bough breaks, bringing the baby down with it. The lullaby is repeated, emphasizing the soothing and rhythmic nature of the song, and concludes with a wish for sweet dreams for children.

What imagery is created by the line 'rock a bye baby on the treetop'?

How does the lullaby suggest the baby will feel?