For a brief time in the early '80s, the church I attended experimented with new hymns and having a guitarist instead of an organist accompany them. The hymn "On Eagle's Wings" came up a lot during this time. Once, while the congregation was singing it, I thought, "I wonder if they could get Willie Nelson to sing this during Mass. It seems right for his voice."
I still think that. I also still think it would have made Mass feel a bit less staid.
