The Without You Blues could be considered a street level sort of praise song. It compares several nasty things to the way that life would be without Jesus as the center and Savior of the singer’s life.
What is Life Like? Here's a silly/serious look at that question.
"Nice Guy" is being sung by an imaginary character who is expressing his philosophy of life to his girlfriend. Despite the fact that it’s a few years old, it also seems quite suitable for many people today.
"Maybe It's Jesus" is a "back-door" approach to presenting the Good News about Jesus.