During the early 1960s, Ray Walker, Neal Matthews, Hoyt Hawkins, and Gordon Stoker helped mold the genre of country music known as "The Nashville Sound", singing backup harmonies to such artists as Patsy Cline and Jim Reeves.
For years, Walker served as song director for "The Amazing Grace" bible program, produced by the Madison Church of Christ in the Nashville suburb.
He has over 600 a cappella worship songs recorded, reportedly being heard in 77 nations[citation needed].
The Jordanaires also backed up Elvis Presley for 15 years beginning in 1956 until he started doing two shows a night in Las Vegas.
As of 2011, Walker is called in about once per month on Sirius/XM satellite radio, chatting with longtime disc jockey and Elvis friend George Klein.