I tell you we must die

From the Met's 1978 production of Rise and Fall of the City of Mahagonny:

Oh show us the way
to the next whiskey bar.
Oh don't ask why,
oh don't ask why.

For if we don't find
the next whiskey bar,
I tell you we must die.
I tell you we must die.
I tell you,
I tell you,
I tell you we must die.

Oh moon of Alabama,
we now must say goodbye.
We've lost our good old momma,
and must have whiskey,
oh you know why.