Merle Haggard's son: Dad predicted he would die on his birthday

Photo from Ben Haggard / Facebook

Merle Haggard's son shared a brief message on Facebook shortly after the death of his father, calling him "the best country singer that ever lived."

The legendary singer known for hits like "Okie From Muskogee" and "Mama Tried" died on his 79th birthday.

Ben Haggard wrote:

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