Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Vulnerable is a posthumous album which was recorded by American singer Marvin Gaye in the late 1970s and set to be released under the tentative title of The Ballads. Shelved in 1979, the album was released by Motown in 1997.By 1967, Marvin Gaye was Motown''s best-selling male artist. Since starting his solo career and inspired by pop/jazz vocalists such as Frank Sinatra and Billy Eckstine, Marvin tried several times to record jazz albums. His debut, 1961''s The Soulful Moods of Marvin Gaye featured Marvin doing covers of Broadway standards and covers of jazz singles by Sinatra and Nat King Cole, failed to attract listeners.