 For the next decade, Miles recorded several albums in which he developed the principle of fusing styles together in jazz.In the late 1970s and throughout the 1980s, Miles embarked upon a prolific career as a keyboardist and Minimoog soloist on many recordings in the heyday of studio work, while working as Roberta Flack's musical director for a stint that lasted fifteen years.During that time, he composed, produced and recorded songs that Flack recorded in the film "Bustin' Loose", and on her album "Oasis".