  The understanding of the pion structure as described in terms of
transverse-momentum dependent parton distribution functions (TMDs) is of
importance for the interpretation of currently ongoing Drell-Yan experiments
with pion beams. In this work we discuss the description of pion TMDs beyond
leading twist in a pion model formulated in the light-front constituent
framework. For comparison, we also review and derive new results for pion TMDs
in the bag and spectator models.
