Since no others leap to mind, you'd have to say that João Bosco is the greatest civil engineer-turned-singer/songwriter in the history of Brazilian popular music. He graduated with his degree in 1972 but since then has been concentrating on becoming one of Brazil's most formidable songwriters. For most of his early career, he supplied Elis Regina with some of her best material; it could be said that each one made the other's career, but since her death, Bosco has stepped into the performance limelight with a great degree of authority and has been one of the more compelling fig...