Well the mixes are done and Jason and I are listening to them in different places over and over. This is important because what sounds great in the studio might not sound great in the car or at home. The mixes can then be adjusted to accommodate these differences. When I played Amanda through my home stereo, the Wurlitzer piano about knocked me over yet it was very balanced in the studio. This can be worked out.
After we're satisfied with the mixes, then off they go to the mastering studio.