I finally saw this film today. I’d wanted to see it since I’d heard of its existence, but not got round to it, but it was definitely worth the wait. Gruff Rhys from the Super Furry Animals saw a singer on Welsh tv in the 70s who used to go onstage wearing a poncho and riding a horse, and then sing flamenco and samba songs in Welsh with an Argentinian accent, and he was spellbound. His grandmother told him it was René Griffiths, a distant uncle of his from South America. An ancestor of his in the 1800s joined the Welsh colony in Patagonia after accidentally killing his cousin in a rigged horse race.