There was complete agreement among two independent raters in classifying 327 reproductive messages out of a total of 362 references taken from a representative sample of the opera and art songs, which represents an inter-rater agreement of over 90%. Figure 4 depicts the results. A t-test failed to demonstrate a significant difference in the number of reproductive categories between the opera and art songs, t(104) = .6098, p = .5433. While the frequency of some of the themes differ, these findings clearly show that the same reproductive categories derived from the content analysis of our initial.
