Anyone who has ever heard the late Spanish-language singer Chavela Vargas, who died at 93 in 2012, knows there’s more going on than meets the eye, or the ear, for that matter. With their respectful and revealing doc “Chavela” (Music Box Films), co-directors Catherine Gund and Dayesha Kyi give the true story of the ranchera diva a long overdue telling. The film seamlessly combines extensive Vargas interview footage from 1991 with vintage performance footage, as well as reverent interviews with gay filmmaking legend Pedro Almodovar, Vargas’ former manager Mariana Gyalui, singers Eugenia Leon, Miguel Bosé and Tania Libertad, cabaret owners Jesusa Rodriguez and Liliana Felipe, composer Marcela Rodriguez, fashion designer Elena Benarroch, photographer Tlany Ortega, former senator Patria Jimenez, and Jose Alfredo Jimenez Jr, son of composer Jose Alfredo, as well as two of Vargas’ ex-lovers, lesbian author Betty Carol Sellen and human rights lawyer Alicia Perez Duarte, among others.