Welcome to the Forum @Linden ! There are lots of BACCH enthusiasts here.
A thread was started in early 2023 devoted to identification of songs that sounded particularly great when played through the BACCH system. You can find it here: https://forum.psaudio.com/t/what-are-you-listening-to-now-bacch-edition/32449
Within the thread you’ll see reference to a playlist that @Steve08226 maintains that includes as many of the recommended songs as he is able to find. It’s grown to be quite lengthy. I enjoy just loading up the Playlist and letting it play random tracks.
Feel free to post any tracks you uncover and I’m sure Steve will get them added.
As for the “whispering track”, that’s from a David Chesky album, “Dr. Chesky’s Sensational Fantastic and Simply Amazing Binaural Sound Show!” You can find it on Bandcamp and many other sources. Edgar likes to play it for new users when he is getting them initially configured. As you know, it’s quite compelling and helps demonstrate how playback via BACCH can provide additional spacial cues to two-track audio.