Man of His Dreams by Kim Fielding

Author Flip Devin has arrived in New Orleans with no suitcase, no inspiration to continue his newest novel, and no hope. Then he begins getting dreamtime visits from Scratch, a handsome musician who was murdered a hundred years ago. According to the fortuneteller across the street, Flip has the gift of Seeing.
Soon after, Flip meets Tony Bergeron, a charming local historian… who looks remarkably like Scratch. Both Tony and Scratch have stories to tell, and New Orleans has magic to share. But with the suitcase still in airline limbo, Flip realizes he’ll need to get rid of his baggage to make room for something new.