Davis Rogan is an American musician and motion picture actor, writer and consultant. He has worked on Treme in several capacities. He is the inspiration for the major character Davis McAlary. He was a consultant for the series pilot "Do You Know What it Means". He was the piano coach to starring cast members Steve Zahn (who plays Davis McAlary) and Michiel Huisman (who plays Sonny) throughout the first season. His music has featured in the show several times. He also plays himself in the show. He returned as a consultant and recurring co-star for the second season in 2011.