Yodeling Walmart Kid Will Perform at Coachella

The kid who went viral for yodeling at a Walmart is about to perform at Coachella with Post Malone.
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Sources close to 11-year-old Mason Ramsey from Golconda, Illinois tell us ... he's set to share the stage with some of music's hottest acts, starting at 2:45 PM Friday with Whethan, an up-and-coming DJ. Funny story -- Whethan actually tweeted about Mason after he went viral.

Several other artists have reached out -- including Posty -- wanting to feature Mason's yodeling magic during their Coachella set, but thanks to Ellen DeGeneres ... he's already booked at the Grand Ole Opry for Saturday ... which is when the rapper's scheduled.