Periodical cicadas on the vegetation below trees planted along a fence row between farm buildings and meadows/pastures. There were exuviae as well but I did not photograph any along this stretch of the walk, nor did I record another sound file. Based on the sound, there seemed to be mostly M. cassinii but it appears this area had two species crawling on the plants:
M. cassinii: https://www.inaturalist.org/observations/85609352
M. septendecula: https://www.inaturalist.org/observations/84012816