@Avi K
“I was told by one of his talmidim that Rav Gustman would yell at someone who whistled in the yeshiva.”
As in the Kuntresei Shiurim? What reason did he give? Did he literally “yell” because thats quite hard to believe. Perhaps it was someone whistling in the middle of seder?
“it comes from the kinot: שְׁרִיקוֹת וּתְרוּעוֹת, לְקָלוֹן וּזְוָעוֹת בְּצֵאתִי מִירוּשָׁלָיִם. ”
Whats the connection between whistling which shows their happiness in your sorrow and the Golus, and whistling because you’re happy. Are Tru’os also ossur according to you, please let us know before Rosh Hashono
“You can google “I hate whistling””
I did, and what came up seemed to suggest its a form of Sensory Processing Disorder and a condition called misophonia. (BTW you can also google “I love whistling”)