YOUNG people looking to lose themselves in loud music have always had two options: Buy tickets to a concert, or go dancing at a club. The best beats have always been in Europe, where DJs spin their music and keep club-goers dancing long into the night. In the US, meanwhile, live music is king. Artists who sing and play instruments are more respected than those who spin music. Now, however, there’s growing evidence that Americans are warming up to the Euro beats.