Olthof, M., Janssen, B., & Honing, H. (2015). The Role of Absolute Pitch Memory in the Oral Transmission of Folksongs. Empirical Musicology Review, 10(3), 161–174. Retrieved from https://www.osu.tests.sfulib4.publicknowledgeproject.org/index.php/EMR/article/view/4435