(2) Notwithstanding the
provisions of paragraph (1), a
Contracting
Party that, on April 15, 1994, had and
continues to have in
force
a
system of
equitable remuneration of
performers for the
rental of
copies
of their
performances fixed in
phonograms, may maintain that
system provided
that the
commercial rental of
phonograms is not giving rise to the
material
impairment of the
exclusive right of
reproduction of
performers.