Music across cultures

I've been watching a lot of Olympics this year. Outside of curling, I really enjoy watching the ice skating and ice dancing programs. Something that has really surprised me is how much American music is found across cultures. For example, there have been multiple routines done to music from Moulin Rouge. Last night, a 19-year-old from Hungary performed to two songs by ACDC.  It's really interesting to me to see music across the cultures along with the more traditional instrumental stuff.