1)Xibalba is a Mexican Pagan Metal band started around 1992 and interested in ancient Mayan mythology. Their sound is in the realm of early bm-period Darkthrone.

2) Xibalba is also the name of a Mexican psytrance duo, comprised of Hugo Riveroll Fuster (aka DJ Hamelin) and Ulises Pascual Villareal (aka Odiseo).

3)There was also another black metal band prior to the new millenium called Xibalba from Baltimore, MD that no longer exists. They have a myspace page: http://www.myspace.com/xibalbabaltimore.