Demo 99 by Ratas De Ciudad is a raw and intense album that showcases the band's punk rock roots. The tracks are filled with gritty guitar riffs, pounding drums, and aggressive vocals that capture the energy of their live performances. The production quality is not the best, but it adds to the DIY feel of the album. The lyrics are socially conscious and tackle issues such as police brutality, poverty, and inequality. The standout tracks include "Ciudad de Ratas," "La Bestia," and "Muerte al Capital." Demo 99 is a solid debut album that establishes Ratas De Ciudad as a force to be reckoned with in the punk rock scene.