Nana Mouskouri is an international exponent of what type of music? Given the previous question, write a context that contains the answer. It can be 1 - 20 sentences. Context:
Artists contributing to this format include mainly soft rock/pop singers such as, Andy Williams, Johnny Mathis, Nana Mouskouri, Celine Dion, Julio Iglesias, Frank Sinatra, Barry Manilow, Engelbert Humperdinck, and Marc Anthony.