 Some of Walker's most well-known songs are "Only A God Like You", "No Greater Love", "Mourning Into Dancing", "He Knows My Name", and "That's Why We Praise Him".In addition to his responsibilities as a church leader, he has taken the "CA Worship Band" on numerous overseas trips, including several trips to Southeast Asia and the Philippines.He has worked alongside Franklin Graham, Greg Laurie, Jack Hayford, Bill Hybels, Rick Warren and at Promise Keepers events.