What does Morgan Freeman sound like on Helium?

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Oscar-winning actor Morgan Freeman, who is known for his baritone voice, sucks Helium out of a balloon during a Science Channel ad, making his voice unusually high.

The commercial is promoting the upcoming fifth season of Through the Wormhole, a series that Freeman hosts, which examines evolution and mysteries about our existence.

The series is set to return June 4.

Follow Carrie Healey on Twitter @CarrieHeals.