Friends, admirers and collaborators are mourning the death of 77-year-old singer Paquita la del Barrio. Known for unmercifully calling out machismo through her music, Paquita became a guiding light for many women who have been wronged or slighted by their partners,

Famed Mexican singer Paquita la del Barrio has died at 77. The Award-winning singer, who rose to prominence for her Mexican style ranchera music, died of a heart attack early Monday, her record label Discos Musart confirmed to "Good Morning America."

Paquita la del Barrio sang of heartbreak and the pain of infidelity, spitting out insults with relish, and empowering a whole generation of women. She has died at 77.