Erm
I first read about whistlers in the mid 60s. Never actually heard them before, but I've long imagined how they'd sound (aided somewhat by the description I read in the 60s).
Maybe it's just me, but the first one sounds exactly how I imagined whistlers would sound, despite it being labelled "Chorus." And the second one sounds like a chorus, despite it being labelled "Whistler Waves."
Obviously I'm suffering from alcohol deficiency, which is known to cause scary hallucinations (like Donald Trump being president).