rachmaninov. he is pure sex. some composers are love (chopin, schumann), others are love with sex (tchaikovsky), some are a spiritual kind of love (beethoven slow movements). Rachmaninov, though, makes me think simply orgasm in a lot of his stuff: etude tableau in Eb minor, 3rd movement melody of sonata no.2, concerto no.2 of course, middle section of prelude no.5.
i am making an oversimplification of course, but you do get the feeling Rach is very 'intense but shallow' whereas schumman, chopin, beethoven can be intesne with depth