  We present a study of the Drell-Yan process in pion-proton collisions
including next-to-leading-logarithmic threshold-resummed contributions. We
analyze rapidity-integrated as well as rapidity-differential cross sections in
the kinematic regime relevant for the COMPASS fixed target experiment. We find
that resummation leads to a significant enhancement of the cross section
compared to fixed-order calculations in this regime. Particularly large
corrections arise at large forward and backward rapidities of the lepton pair.
We also study the scale dependence of the cross section and find it to be
substantially reduced by threshold resummation.
