You will be shown an excerpt from a computer science scientific research paper, followed by a question about the paper. Please answer the question. Do not include any text in your response other than the answer.

Context: When the melody is unaware, BLSTM and rVTHarm obtain signiﬁcantly lower Preference scores than when the melody is aware ( p < 0 . 001). We further compute Pearson’s correlation coefﬁcient of U with C or P scores, as shown in Table 6. As a result, rVTHarm reveals the most nega- tive correlation of U with both C and P scores when the melody is aware. This indicates that 1) controlled chords are more unexpected and unpleasant with a familiar melody, and 2) some factors other than complexity seem to cause an increased unexpectedness in rVTHarm. However, the mean preference score of rVTHarm signiﬁcantly increases with melody awareness. This implies that the familiarity of the melody may strongly compensate for the high unexpect- edness of rVTHarm. This tendency needs further investi- gation to improve the robustness of controllable melody harmonization.

Question: What would be an example of the methods that explore the effect of melody awareness?
The method for exploring the effect of melody awareness can be one that deeply investigates how the awareness of the melody can affect the unexpectedness of the controlled chords and how this unexpectedness affects the perceived complexity and preference of the chords.