Footage of the routine went viral -- because it's awesome -- and got all the way to Janet, who DEMANDED she talk to Frazier face to face (virtually, of course).
The two connected on Friday -- and Jackson gushed about Frazier's routine, talent and raw athleticism.
"I just want too say thank you," Janet said to Margzetta ... "Thank you for sharing your talent. It's so beautiful to see you tumble. Really inspiring."
"It just inspired me to want to do more, and do better and be stronger. I loved it. Absolutely loved it."
Frazier was so touched, she choked back tears and told her idol how much Janet and her music meant to her.