There comes a time in every Irma Thomas show when she calls for the audience to shout out requests. For some fans that becomes a chance to make sure all the greatest hits get played; for others it occasions a round of Stump the Band. “People ask for things to see if I can still do them, I think that’s the main reason,” she says. “There’s quite a few that I’ll remember melodically, but not lyrically—so if I can find the lyr...