"Ewok Celebration", known commonly as "Yub Nub", is the title of a 1983 song that appears in Star Wars VI: Return of the Jedi. It was published by Bantha Music and is administered by Warner-Tamerlane Publishing Corporation.
The song appears in the final scene of the film during the celebration in the Ewok village. It was removed from the film in the Special Edition and replaced a new piece by John Williams entitled "Victory Celebration".
The music was written by John Williams, the Ewokese lyrics were written by ILM sound designer Ben Burtt, and the English lyrics were written by John Williams's son, Joseph Williams.

Ewok Lyrics

Yub nub, eee chop yub nub;
Ah toe meet toe peechee keene,
G'noop dock fling oh ah.
Yahwah, eee chop yahwah;
Ah toe meet toe peechee keene,
G'noop dock fling oh ah.
Coatee chah tu yub nub;
Coatee chah tu yahwah;
Coatee chah tu glowah;
Allay loo ta nuv.
Glowah, eee chop glowah;
Ya glowah pee chu nee foam,
Ah toot dee awe goon daa.
*Coatee cha tu goo; (Yub nub!)
Coatee cha tu doo; (Yahwah!)
Coatee cha tu too; (Ya chaa!)
Allay loo ta nuv,
Allay loo ta nuv,
Allay loo ta nuv.
Glowah, eee chop glowah.
Ya glowah pee chu nee foam
Ah toot dee awe goon daa.
repeat *chorus

English Lyrics

Freedom, we got freedom;
And now that we can be free,
Come on and celebrate.
Power, we got power;
And now that we can be free,
It's time to celebrate.
Celebrate the freedom;
Celebrate the power;
Celebrate the glory;
Celebrate the love.
Power, we got power;
And now that we can be free,
It's time to celebrate.
*Celebrate the light; (Freedom!)
Celebrate the might; (Power!)
Celebrate the fight; (Glory!)
Celebrate the love.
Celebrate the love.
Celebrate the love.
Glory, we found glory.
The power showed us the light,
And now we all live free.
repeat *chorus