"Miles Davis famously described his improvisational technique as parallel to the way that Picasso described his use of a canvas; The most critical aspect of the work, both artists said, was not the objects themselves,but the space between objects. In Davies's case he describes the most important part of his solos as the empty space between notes the " air " that he placed between one note and the next."
from This Is Your Brain On Music by Daniel Leveitin