  A two-parameter quantum algebra $U_{qp}({\rm u}_2)$ is briefly investigated
in this paper. The basic ingredients of a model based on the $U_{qp}({\rm
u}_2)$ symmetry, the $qp$-rotator model, are presented in detail. Some general
tendencies arising from the application of this model to the description of
rotational bands of various atomic nuclei are summarized.
