At the time, Miles Davis' music differential was in its unusual conception. Instead of using the complex harmonies, the profusion of notes and the frantic rhythms that guided much of the jazz practiced in the 1950s, Davis decided to regain some of the simplicity that this genre lost with the advent of bebop - the nervous and inventive jazz style ; that musicians like Charlie Parker and Dizzy Gillespie developed in the previous decade.
The new path pointed out by Miles, already outlined in his album “Milestones” (1958), was labeled by critics and scholars as modal jazz. By substituting improvisations based on chord progressions for modes (scales), he found a freer and spontaneous way to develop melodies that opened up previously unheard of possibilities for jazz expression.
