Interesting replies and topic, Ray:

For me, it's all over the map. Rachmaninoff, Alison Krauss, The Beatles, Martin Denny, Jack Jones, Duke Ellington, Brubeck, George Strait, Don Williams, Willie Nelson, Hank Williams, Sr., Wilson Phillips and the list goes on.

Most of the CDs in my player with the big speakers are my own. When nobody is home, I sit quietly and try to figure out how I'd re-record a line or phrase or change the melody if I ever do the song again. It's not self-worship 'cause I really don't care much for my vocals. When all is said and done, I'm only attempting to be a songwriter... not an artist or performer.
Self improvement is my objective. Too bad it isn't working... LOL!