Book excerpt: The Nineties has been a thrilling and varied decade for pop, with a renaissance of both rock and roll and pop music. Along with new acts like the Spice Girls, Oasis, Beck, Bjork and Nirvana, there has been an explosion of dance music and the emergence of powerful new genres like drum'n'bass and thrash metal. All the entries have been created from the massive data-base of the Encyclopedia of Popular Music, first published in 1992, which is the acknowledged champion of contemporary music reference books.