I agree with Craig, not all dance music has to be 'correct'. In fact, one of the greatest hurdles to getting people to try ballroom dancing, is that they think the music is old fashioned, too orchestrated and of no interest to them. That's why so many go for salsa. When we explain to beginners that there is alot of modern music that can be danced to, they are always extremely surprised. They never guessed that most of lady Gaga is a cha cha or 'Soul Sister' is a fantastic quickstep. So there are no vocals at Blackpool, there are at other major competitons. In fact, I did a slow fox once to a rendition of 'Eye of the Tiger'. Bizarre but doable.