Heitor Villa-Lobos' 'Amor y perfidia' is a virtuosic character piece that explores dramatic contrasts and intense emotions. It showcases his distinctive Brazilian modernism with demanding technical passages.
The primary technical challenge lies in executing the rapid arpeggios and octave passages with precision and power.
Amor y perfidia, W135 is rated Henle level 7 of 9 — late advanced repertoire, roughly ABRSM grade 8 and above. In the RCM system it corresponds to about level 8.
You should be comfortable at Henle level 7 — meaning you can already play level 6–7 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
A typical performance of Amor y perfidia, W135 lasts about 4 minutes.
Amor y perfidia, W135 is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.