From revered filmmaker Les Blank and El Cerrito-based Arhoolie Records’ Chris Strachwitz, Chulas Fronteras (Beloved Borders), is a zesty introduction to Norteña music and the culture that exists along the Texas-Mexican border. The music is a fusion of traditional Mexican harmonies, German dancehall rhythms, and a little something extra. From soulful, lively dance tunes to political work songs, música Norteña has evolved since the turn of the 20th century into a unique Mexican-American hybrid. Blank links the music’s spirit to the strong family bonds of Tejanos. The plight of migrant workers adds a sobering backbeat to this joyous film.