Hard exclusive production of two pions

The leading twist parametrization of dipion mass distribution in hard exclu sive reactions is proposed. The parameters of this parametrization are rela ted to quark distributions (usual and skewed) in the pion and to distributi on amplitudes of mesons (pi, rho, etc.). We show that measurements of the s hape of dipion mass distribution in hard exclusive reactions can give impor tant information about partonic structure of the pion. The expression for t he amplitude of the reaction gamma*gamma --> pi pi near the threshold in te rms of singlet quark distribution in the pion is presented.