As much as I love REM, I'm not sure that really carries through in this Crabcore tribute act. Maybe if you could get your stance a little lower...maybe.
I used to love the Zippers.
Fun fact: Andrew Bird is the best whistler I've ever seen. He's been solo for years, and he's amazing. Such a great show. And that dude can whistle. Highly recommend checking him out (seriously).
I've tried most of them. This is my favorite. Safe for nitro too.
https://www.amazon.com/gp/product/B00J98A9YG/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
I've been turned off by the over-produced nature of JHS vids for some time, so this was much easier for me to watch. I'm always in for a good ol' internet slapfight, and this one has a clear winner.