In Adventure Time season 5, in the episode "The Great Bird Man" Finn and Jake meet the former goblin king Xergiok, that during a scene in which they are flying on a huge bird, he sung "Real Power", a quite trippy song in which he has some awesome allucinations :D Here are Real Power Song's lyrics:
Far, far above,
Time standing still,
Memories are One,
Same space, same will.
Now move along,
Light speed divides,
Rips all from One
It blows my eye-holes
and fills me with real POW-ER,
fills me with real power,
power power power power
Power...
