Filmmaker Kaylyn Thornal follows three prominent Boston female rockers (Jen Trynin, Laurie Geltman, Juliana Nash) through several hazardous, up-and-down years in the music business. The musicians are as personable as they are talented, but that doesn’t save them from endless calamities, some of which are  still tied to the marginality of women performers in rock. Thornal expands her film to bring in other smart, brash women’s voices from the music scene, including the sardonic Jules Verdone, Fuzzy’s no-nonsense Chris Toppin, and Letters to Cleo’s brilliantly outspoken Kay Hanley.