Recorded in just two sessions in the spring of 1959, Miles Davis’s Kind of Blue is widely considered to be one of the most important jazz albums ever produced. Davis assembled a group of talented musicians—including saxophonist John Coltrane and pianist Bill Evans—and gave them minimal instructions before recording. Possibly the best-selling jazz album of all time, Kind of Blue is notable for having left out something considered to be the backbone of earlier jazz composition—what? Discuss
Source: The Free Dictionary