  We calculate the gauge invariant Drell-Yan-like hadron tensors. In connection
with new COMPASS results, we propose the single spin asymmetry which probes
gluon poles together with chiral-odd and time-odd functions. The relevant pion
production as a particular case of Drell-Yan-like process has been discussed.
For the meson-induced Drell-Yan process, we model an analog of the twist three
distribution function, which is a collinear function in inclusive channel, by
means of two non-collinear distribution amplitudes which are associated with
exclusive channel. This modelling demonstrates the fundamental duality between
different factorization regimes.
