  Sklyanin's formula provides a set of canonical spectral coordinates on the
standard Calogero-Moser space associated with the quiver consisting of a vertex
and a loop. We generalize this result to Calogero-Moser spaces attached to
cyclic quivers by constructing rational functions that relate spectral
coordinates to conjugate variables. These canonical coordinates turn out to be
well-defined on the corresponding simple singularity of type $A$, and the
rational functions we construct define interpolating polynomials between them.
