Club Desvelado has completed Puro Conjunto. The best parts were the interviews of musicians conducted in Spanish and an account of an adult trying to learn the accordion. There's a piano accordion with Ruben Ramos, but every else uses one of two accordion brands. I haven't seen anything about the designs painted on the bellows: norteno usually red, white, and green; conjunto tejano, usuall "azteca" designs, often red, white, and black.