The melodies in Level 7 involve more complicated scale-type passages and position changes, including some leaps.  The melody is often found on the top of triads and 4-note chords.  Harmonies become more sophisticated and textures become more full with larger stretches.  Coloristic textures are used more as well as more advanced syncopation.  Technical requirements demand reasonable speed, agility and accurate leaps.  Improvisation advances step-by-step building blocks for melodic and vamp construction; more advanced terminology and labels for scales, modes and chords; and an increased complexity of interplay between the hands.