Harry Edward Nilsson III (June 15, 1941 – January 15, 1994), sometimes credited as Nilsson, was an American singer-songwriter who reached the peak of his commercial success in the early 1970s. His work is characterized by pioneering vocal overdub experiments, returns to the Great American Songbook, and fusions of Caribbean sounds. A tenor with a 3+1⁄2 octave range, Nilsson was one of the few major pop-rock recording artists to achieve significant commercial success without ever performing major public concerts or undertaking regular tours.