(Sing to the tune of "The Muffin Man")

Can you integrate by parts?
Find an integral by parts?
Can you integrate by parts?
Well, let us see.

First you pick a nice part u
and the rest becomes dv.
Then you find du from u
And integrate dv to v.

The integral of u dv
is equal to u times v,
minus integral v du,
which is left to do.

If by some chance v du's
a harder integral to do,
try a new choice of parts and you
will work it out, I'm sure.

Sometimes you'll need parts again,
Sometimes you'll need parts again.
And oh what fun you will have then
to integrate by parts again!