Since its founding in 1962, the St. Jude Children's Research Hospital has helped save countless lives affected by catastrophic juvenile diseases -- and they're marking their 50th anniversary by deepening their commitment to the cause with a new donation campaign, dubbed 'Hey St. Jude.'

Promoted with a heartwarming video set to the strains of the Beatles classic 'Hey Jude,' the campaign -- which has its own Twitter hashtag, #heystjude -- seeks to drum up donations for the hospital by offering a #heystjude t-shirt to anyone who contributes $35 or more.

You can see the shirt on Betty White in the still from the video at the top of this post -- as well as on a dizzying array of celebrities who turned out to sing 'Hey Jude' in the clip, including Keith Urban, Darius Rucker, Robin Williams, and Jennifer Aniston. No matter how many times you've listened to the song, you've never heard it like this.

Dedicated to the belief that "no child should die in the dawn of life," the hospital has consistently provided treatment to patients regardless of "race, religion or a family's ability to pay," as well as dedicating a substantial portion of its funds to medical research. Visit the Hey St. Jude website for more information.

Watch 'Hey St. Jude'

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