The singer at the wedding scene is Genesis Rodriguez's real-life father, José Luis Rodríguez 'El Puma', "El Puma."
Shot in 21 days.
The copyright year shown beneath the title (in Roman numerals) is 1970.
The opening voice-over by Kris Kristofferson, "If it sounds Spanish, man, that's what it is: it's a Spanish movie," echoes the spoken opening of his version of "Me and Bobby McGee," which he wrote in 1970: "If it sounds country, man, that's what it is: it's a country song."