MEXICO CITY - Led by a Michael Jackson impersonator in sunglasses, a sequined black jacket and white glove, dozens of the singer's Mexican fans are practicing the steps in his "Thriller" video to attempt a new world record.

The organizer, Carlos Contreras, says more than 10,000 people have signed up to take part in the dance routine Aug. 29, which would have been Jackson's 51st birthday. A group of about 50 showed up for practice Tuesday.

The Guinness Book of World Records says the most people to dance to "Thriller" simultaneously in one place is held by a group of 242 College of William & Mary students who performed the routine in May.

The previous record was 147 people at an event held in 2008 at a British secondary school.