I think you're shootin' backwards, Littlefoot1616!
Malte asked for lines where contractions ARE spoken, such as "Can't" or "don't". Your answers were all DO NOT and CAN NOT.

:
Therefore, I'm going to beat you to it!

:
It's a well-known fact that the LBT songs use different rules of speech then the rest of the dialogue in the films, and this question is no different. B)
Number one:
During the song "Always There", Ducky sings "...
don't be scared".
Number two:
During "Adventuring", Ducky and Petrie sing "
He's going to see the Great Beyond"
And just for the heck of it:
Number Three:
During "Friends for Dinner" Ducky sings "He would spit out Cera, 'cause
She's too tough!"
Do those answers look alright, Malte? B)