Kenny Rogers is one of the most famous country musicians with a mustache. He was voted the 'Favorite Singer of All Time' in a People magazine poll in 1986. Kix Brooks and Ronnie Dunn of the famous country group, Brooks and Dunn, wore mustaches and they began writing songs and playing in the late 1980's.
Back in the 1980's a large number of country music singers had facial hair. Some of the most notable "hairy" singers sporting mustaches were Toby Keith, Keith Whitley, Eddie Rabbit, and the duo Brooks and Dunn.
John Anderson
Kenny Rogers
Ricky Skaggs
John Conlee
Earl Thomas Conley
Billy Ray Cyrus
Vern Gosdin
Eddie Rabbitt
Keith Whitley
Jeff Cook from the band Alabama
Randy Owen from the band Alabama
Mel McDaniel
The Statler Brothers
Garth Brooks
Don Williams
Willie Nelson
Lee Greenwood
Hank Williams Jr
Dan Seals
There were several 80's country singers that had mustaches for example, Alan Jackson, Travis Tritt, Willie Nelson,Dean Dillon, Leon Everette, Keith Whitley are the ones that come to mind.
Everyone had mustaches in the 80's,country singers were no exception, in fact you would be hard pressed to find a country singer in the 80's that didn't have a mustache.