 In 1980, Banks became Gaye's brother-in-law when he married Gaye's sister Zeola.Banks was one of the few in Gaye's revolving door of backup musicians to continue to accompany him even as several musicians would leave, some later suing Gaye for failing to pay them money for earnings during the tour.Banks contributed on Gaye's final Motown album, "In Our Lifetime", and was the musical director of Gaye's acclaimed 1980 European tour.