  It is shown that a choice of degrees of freedom of a bipartite continuous
variable system determines amount of non-classical correlations (quantified by
discord) in the system's state. Non-classical correlations (that include
entanglement as a special kind of correlations) are ubiquitous for such
systems. For a quantum state, if there are not non-classical correlations
(quantum discord is zero) for one, there are in general non-classical
correlations (quantum discord is non-zero) for another set of the composite
system's degrees of freedom. The physical relevance of this 'quantum
correlations relativity' is emphasized also in the more general context.
