This neat little gem came to my attention thanks to the Sylvia Loch & The Classical Riding Club (CRC) facebook page.
The video caption says –
Lesson to a student in the Amazon carousel Nuno Oliveira, the quinta do Brejo. The horse is Fra Meliton. It was then quite old, probably 18 or 19 years. This school horse was often presented by the teacher as an angel horse. He was also loved by students, both because of its degree of training and for his extreme kindness. The Amazon is Christine Hugon. She was a student of Nuno Oliveira for 9 years and rose several times in the forks under his direction. The video is of one of his first lessons amazon.