For the characters I only used solid black and Purple to highlight the main features.
Background is made up of several transparent irregular shapes to give a dynamic feel that moves in the opposite direction of the musicians. This helped gain the Jazzy feel I was lookng for.
Finally I added the illustration from illiustrator to a basic layout in indesign to get correct allignment for the text and imagery. From Indesign the poster is prepared for print with the correct values of bleed and colors.