With the Avandarazo effect at its height and the hippie movement waning worldwide, few bands survived the curbs; though the ones that did, like Three Souls in My Mind (later El Tri), remained popular due in part to their adoption of Spanish for their lyrics, and had a dedicated following. As the hippie trend waned c. 1973, many Mexican bands moved to progressive and hard rock. During the seventies there were many new bands but very little support from the music industry for original rock music. The bands suffered from it and had to limit themselves to performing in . Representative bands of this period were: Perro Fantastico, Mara, Vox Populi, Stray Cat, Rock Moviloy and many more. Perro Fantastico, a band from the east side of Mexico City (Ciudad Nezahualcoyotl) created rock music sung in both Spanish and English, formed by the brothers Jose Luis and Jaime Francisco González (guitar and bass) with Guillermo Avalos (drums) and Arturo Fajardo (rhythm guitar). They played, among other bands, in places like Salon Chicago, Macumba, El Herradero until the band disbanded around 1978. During the seventies bands also performed in high schools, universities and other places. Many others followed or continued during the eighties.