July 23, 2012 at 04:23 PM EDT

Anyone who has read Dr. Seuss’ The Lorax, or seen this spring’s blockbuster animated movie, knows that the truffula forest was critical to the survival of many peculiar species.

In “Serenade,” one of three bonus mini-films on the upcoming Blu-ray release, we see just how the bear-like Brown Bar-ba-loots use those colorful tufts to keep the species going — with a little help from Auto-Tune.

Not to go all Seussian-nature-documentary on you, but apparently the girl Bar-ba-loots hang out in the tops of the trees until a suitable admirer woos them from that perch with a robust love song. Here we see a competition between two such furry fellows — one suave, the other shy — which soon draws other forest-dwellers such as the Swomee-swans and the Humming-fish into the sing-off.

Check out the full video on The Lorax Blu-Ray, out Aug. 7.

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