Disturbed is a rock band from Chicago, Illinois. The group was formed in 1996 when musicians Dan Donegan, Steve "Fuzz" Kmak, and Mike Wengren hired singer David Draiman in Chicago, Illinois. Originally classified as a nu metal band, Disturbed is now regarded by some music critics as hard rock or heavy metal, although others now regard them as alternative metal. However, the band's genre is still being debated. When asked about die-hard metal fans not finding Disturbed heavy enough, frontman David Draiman stated: "We probably have too much melody going on or we're not quite as turbulent or caustic. While I really love that type of music, it's not what we try to do. If we have to place things in context, we're more hard rock than heavy metal these days."

Wolfgang was a Filipino heavy metal/hard rock/grunge band formed around 1992. They were named among the four greatest Filipino rock bands of all time, alongside the Juan De la Cruz Band, The Dawn and The Eraserheads. Wolfgang's hard-hitting, loud, grunge sound made them very popular with rock music fans. They were at the height of their popularity from the mid and late 1990s until 2002 and was recognized in the South East Asian region, Hong Kong, Japan, the United States and Canada.

What started out as a group of young college kids from the Ateneo de Manila University, CHICOSCI was originally composed of Miguel Chavez, Mong Alcaraz, Carlos Calderon, and Joel Salvador. The four enjoyed playing together so much that they decided to take their music seriously by recruiting guitarist Sonny Baquisal and long-time friend Eugene Esquivias to solidify the songwriting process. Chicosci won an interschool Battle of the Bands and spent the prize money in recording a demo - an investment that landed them a two-album record deal with EMI-Virgin Philippines