Glen Campbell

The song went on to become an all-time classic.

On June 22, 2011, Campbell's fans learned that the iconic singer had been diagnosed with Alzheimer's disease.

Whether they're sad, spooky or just make you think, these country music videos will give you chills.

On May 17, 1967, Campbell recorded "Gentle on My Mind," which became one of the biggest hits of his career.

All 50-plus of 'em.

These country legends should all be Rock & Roll Hall of Famers.

Country music had a big role in television in the 1960s, thanks in part to these standout moments.

Did you know he played on these hits?

Campbell would have turned 86 today.

On April 19, 1969, Campbell earned a No.1 hit with "Galveston."