Interesting evidence for the existence of an auditory equivalent of the well-known simple and complex cells that were described decades ago in the visual cortex
Tian, B., Kusmierek, P., & Rauschecker, J. P. (2013). Analogues of simple and complex cells in rhesus monkey auditory cortex. Proceedings of the National Academy of Sciences of the United States of America, 110(19), 7892–7897.
This paper is part of a wider project involving these authors that argues that the structure of music is derived from the structure of human speech and vocalizations