"Mama Said They'd Be Days Like This"

-Nell sang a few notes of this in "Breakdance"
-Nell sang a few notes of this in "Sam Goes Too College"


Happy Days Are Here Again

-Nell Sang a few notes of this in "Alabamy Bound Pt 2
-Nell Sang a few notes of this in "Found Money"


Down By The Riverside

-Nell sang this at the very end of "Return Of The Do Wop Girls"
-Nell sang a few notes of this in "Cat Story"




Anywhere else they used the same songs in different episodes?