This work is a didactic piece for keyboard, likely organ or harpsichord, focusing on improvisational and compositional techniques within the fantasia style. It is characterized by its free-form structure and exploration of contrapuntal devices.
Requires a strong understanding of figured bass and counterpoint to navigate its improvisational demands.
Arte de Tañer Fantasia is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7.
You should be comfortable at Henle level 5 — meaning you can already play level 4–5 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
Arte de Tañer Fantasia is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.