Here's a good example of a band that mashes together metalcore screaming, hyperactive spazcore noise, ultra-sugary girl pop, video game sound effects and regular electronic dance music. Americans can't compete with this shit, although I guess fans of Ponytail or HORSE The Band might find something to like here:
Not that I'm necessarily a fan of this stuff, mind you. Bands like this essentially amount to trivia questions for me. I like music that's a little more weird in terms of its structure or atmosphere (Kayo Dot, Oxbow, Tera Melos, Clipd Beaks) rather than on the basis of pure sonics. Genre mashups are generally okay on their own terms, but they don't really come across unless they're actually revealing something about the genres themselves, like (and I'm aware this is a really terrible example) something like Avicii's "Wake Me Up", which communicates the insight that traditional folk music and modern-day dance music are both rooted in the same basic rhythm. Or Dälek finding the common thread between hip hop, industrial, shoegaze, and even goth. Or even like The Residents' Third Reich And Roll, exposing the essential vapidity of classic rock. It helps if you bring a little insight to it, not to say that all experimental music needs to have a thesis statement behind it.