Tchaikovsky's "Aveu Passionné" (Passionate Confession) is a brief but intensely expressive piano piece. It's distinguished by its sweeping melodic lines, rich harmonic language, and a palpable sense of emotional urgency.
Mastering the expressive rubato and rich, Romantic harmonies is the primary technical goal.
Aveu Passionné 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.
A typical performance of Aveu Passionné lasts about 5 minutes.
Aveu Passionné is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.