"Just a Closer Walk with Thee" lends itself very well to bluesy treatment, as do "When the Saints Go Marching In" and "Oh, Mary, Don't You Weep." Songs like "Me and Bobby McGee" and "The Midnight Special" work well. I recently heard a bluesy version of "They Gotta Stop Kicking My Dog Around," an old-timey, bluegrass tune. For that matter, bounce the beat a bit and almost anything becomes a blues.

--seed