  We use the heavy dense formulation of QCD (HD-QCD) as the basis for an
analytic expansion as systematic approximation to QCD at non-zero density,
keeping the full Yang-Mills action. We analyse the structure of the baryonic
density and other quantities and present data from the complex Langevin
equation (CLE) and reweighting (RW) calculations for 2 flavours of Wilson
fermions.
