@tomic601: Damn Jim, where'd ya see Iris with accompaniment? A bassist and guitarist? All four times I've seen her she was solo, which was fine with me. I've seen Joan Osborne with just her pianist and guitarist, and with her I missed a rhythm section. Still great though.
About a year ago I saw two new young(er) artists and an old-timer touring together, in a great little theater in Portland, Mississippi Studios. They were Kelly Willis, Brennen Leigh, and Melissa Carper. Melissa was playing an upright bass, Kelly and Brennen acoustic guitars. A night of great songs, singing, and playing! The audience was divided about equally between greybeards (such as myself) and young hipsters. Outrageous alcoholic beverage prices! I gotta start sneaking in my flask.