By the time David Bowie recorded and released his album Young Americans in 1975, he had undergone at least three previous transformations from the Space Oddity to Heavy Metalhead to Proto Punker to Ziggy Stardust. Now cooling his jets from leading the glam rock revolution, the tall Brit settled down in Philadelphia to cut the album that would define his next great transformation as The Thin White Duke. Someone at the time described Bowie as the whitest man he had ever met—translucent white. An odd sobriquet given that he was going to put down the grooviest work of his even-then legendary oeuvre. Working with future R&B Grammy winner Luther Vandross, Bowie successfully made his transition to the hip, laidback grooves en vogue in the mid 1970s where funkified rock-pop planted its flag in the Disco Era.