Della's Lullaby is a vocal version of the "DuckTales Moon Stage Theme", originally composed by Hiroshige Tonomura. Della Duck claims to have sang it as a lullaby to Huey, Dewey, and Louie before they hatched.
Della sings the lullaby to the Moon Mite baby to calm it down.
Lyrics
Look to the stars my darling baby boys
Life is strange and vast
filled with wonders and joys
Face each new sun with eyes clear and true
Unafraid of the unknown
Because I'll face it all with you
Gallery
DuckTales - Della's Moon Lullaby - What Ever Happened To Della Duck?
Delia's Lullaby