What makes Mundo feliz by Fobia notable?

This album helped Fobia establish a significant foothold in Latin American rock music, achieving notable commercial success. It is often credited with influencing the burgeoning rock en español movement of the early '90s, paving the way for future generations of Mexican rock bands. Released in 1991, 'Mundo feliz' was Fobia's second album, following their self-titled debut. At this point, the band was solidifying its place in the Mexican rock scene, having gained popularity with their first release and starting to explore more eclectic sounds.