I arrived at this rocky point just before 8 PM, yesterday. I hoped that soon the frogs would start tuning up for the evening’s concert. You will hear the road sounds from the main highway across Bowen Island. At its closest it is about 250 m on the left of the stereo field. Other than converting to MP3, and a fade-in and fade-out at each end, this file is unedited.
Edited to add: sometime the above player had difficulty linking with the audio. If it does, the material is stored in a variety of formats at http://www.archive.org/details/TheFrogChorusTunesUpOnGraftonLake