SOUL SINGER/HARMONICA MASTER CURTIS SALGADO UNDERGOES SUCCESSFUL CANCER SURGERY Award-winning soul blues singer/harmonica master Curtis Salgadounderwent successful surgery on July 18 in Portland, Oregon, to remove a cancerous growth from his lung, according to his manager Shane Tappendorf. Doctors removed the entire lower lobe of his left lung where a metastasized mass was found. Salgado will return home…