"Cascades" is an Oliver Nelson composition from the 1961 album The Blues and the Abstract Truth, featuring an unusual 56-bar AABA form that gives the piece its distinctive flowing quality. Set in C minor at an up-tempo swing pace of approximately 254 beats per minute, the track features solos from Freddie Hubbard on trumpet and Bill Evans on piano. Hubbard's two-chorus solo demonstrates his remarkable command of the instrument's upper register and his ability to construct long, logically developing melodic lines over an extended form. Evans follows with two equally compelling choruses that reveal his signature approach to piano improvisation, combining rich harmonic voicings with intricate right-hand melodies that seem to cascade through the changes, aptly fitting the composition's title. Nelson's arrangement surrounds these solos with carefully voiced ensemble passages that reflect his mastery of orchestration, even within the small-group format. The extended form of "Cascades" was characteristic of Nelson's compositional ambition, as he consistently pushed beyond the standard 32-bar and 12-bar frameworks that dominated jazz of the period. The pairing of Hubbard and Evans as the featured soloists creates a compelling contrast between Hubbard's extroverted brilliance and Evans's introspective lyricism.