READ MORE: Top 10 Eric Clapton Songs "Dear Willie, Here's to 90 years and many more. Love, Eric and Bradley," the text in the video reads. A Brief History of 'Always on My Mind' ...

Willie Nelson carried "Always On My Mind" to a Grammy win for Song of the Year. Thanks to Willie and 300 covers later, the song lives on.

1) Willie Nelson, “ Always On My Mind ” (1982) Willie Nelson’s “Always On my Mind” starts with a twinkling piano before his voice comes in clear and soulful.

Mark James, Grammy-Winning “Always on My Mind” and “Hooked on a Feeling” Songwriter, Dies at 83 He wrote often for Elvis Presley, who had his last No. 1 with James' "Suspicious Minds." ...

“Always On My Mind” became a hit for Bobbie’s brother, Willie, in the ’80s. Given Bobbie’s connection to the song, her and Shires’ duet version feels especially poignant.

More famously, “Always On My Mind” was a top-10 pop smash for two very different artists in the ’80s — first for Willie Nelson in 1982 and then for the Pet Shop Boys in 1987.