I love to pratice making babies.  Maybe that's all it was, just some serious praticing gone wrong. 

But why country music?  Maybe if Tim Mcgraw, his wife, and Shania were throwing down a serious threesome live on stage, (picture that in your head) that would be sexy, but the music, not so much.

Pregnancies jump after Grand Junction festival

GRAND JUNCTION, Colo.—Whether it's something in the water or the grooving sounds of country music, the aftermath of what one health officials calls Grand Junction's "Woodstock" drives up pregnancies in this city each year.

http://www.denverpost.com/news/ci_9817712