The GPD Program at COMPASS

An important part of the COMPASS-II experiment at CERN is the
investigation of the nucleon structure through Generalised Parton
Distributions (GPDs). These can be accessed in hard exclusive
measurements. The high energy muon beam from CERN SPS allows to measure
these processes in a wide and up to now uncovered range in Bjorken $x$
and $Q^2$. The availability of muon beams with opposite charges and
polarisations provides unique possibilities to access the GPDs in deeply
virtual compton scattering. Independent and complementary information
about GPDs will be gained by hard exclusive meson production.