RTV PUBLIC REPERTOIRE CATALOG Query: (all public entries) Filters: {"piece_id":2806,"timezone":"UTC"} Matches: 1 | Returned: 1 | Public catalog: 6434 Page 1 of 1 Next: none; end of results Previous: none Version: 22726 | Snapshot: 40899ee732c8a9d86f9dcf2825f62031 Created: 2026-09-30T21:24:54+00:00 | Source: 2026-09-30T21:24:47+00:00 | Expires: 2026-10-01T21:24:54+00:00 {"piece_id":2806,"title":"Chopin - Etude No. 21 - Butterfly Wings - Op. 25, No. 9","composer":["Chopin, Frédéric"],"composers":[{"id":96,"name":"Chopin, Frédéric"}],"instrument":["Piano"],"instruments":[{"id":1,"name":"Piano"}],"genre":"Romantic","genre_id":3,"is_archive_only":false,"evaluation_eligible":true,"points":1290000,"level":9,"canonical_url":"https://roadtovirtuosity.com/chopin-etude-no-21-butterfly-wings-op-25-no-9","instrument_points":[{"instrument_id":1,"instrument":"Piano","points":1290000}],"collections":[],"collection_semantics":"existing catalog subcategory grouping","work_identifiers":[],"work_id":null,"book":null,"sequence_position":null,"movement_number":null,"movement_title":null,"key":null,"arrangement":null,"edition":null,"entry_scope":null,"completeness":"unknown","reviewed_enrichment":false,"availability_label":"Non-Commercial","has_download":true,"download_availability_basis":"public license category and existing file reference; storage health not verified","description":"Chopin’s Étude in G-flat Major, Op. 25 No. 9, often nicknamed “Butterfly” or “Butterfly Wings,” is a short, brilliant Romantic étude with a light and fluttering character. The music is marked Allegro vivace and leggiero, so the quick figures should sound graceful, delicate, and buoyant rather than heavy. The piece is built around rapid broken intervals in the right hand, light leaps, crisp articulation, and a steady left-hand accompaniment that keeps the music moving forward.Measures 1–8 introduce the main butterfly-like texture. The right hand plays quick, light broken figures with small slurs, while the left hand supports with a steady bass-and-chord pattern. The opening needs a flexible wrist and a very light touch so the repeated gestures do not become stiff.Measures 9–16 continue the same main idea with more harmonic movement and small crescendos. The right hand keeps fluttering through repeated interval patterns, while the left hand gives the harmony shape underneath. The challenge is to keep the motion even and playful while still following the phrase direction.Measures 17–24 move into a softer section marked piano. The texture remains light, but the harmony shifts into a more shadowed color. The octave marking in the right hand makes the sound brighter and more distant, while the left hand continues its steady accompaniment.Measures 25–32 return to a stronger character, beginning with a forte and marcato marking. The same quick right-hand figures now sound more confident and accented. This section builds through a crescendo and prepares the most dramatic part of the étude.Measures 33–36 form the strongest passage of the piece. The music reaches fortissimo and appassionato, giving the fluttering texture a more passionate and forceful character. A brief ritenuto slows the energy before the lighter material returns.Measures 37–45 bring back the main idea in a softer and more delicate way. The right hand returns to quick broken figures, and the leggierissimo marking asks for an especially light, graceful touch.Measures 46–50 close the étude with fading energy. The final measures become quieter through a diminuendo and leggieriss. marking, ending with a very soft final gesture. Instead of a large dramatic ending, the piece disappears lightly, matching its butterfly-like character.Interesting fact: Chopin’s Op. 25 No. 9 is one of his shortest études, but it is still technically demanding. Its difficulty comes from making fast leaps and repeated broken intervals sound effortless, graceful, and light—like wings moving quickly in the air.","created_at":"2024-05-20T20:02:03+00:00","first_published_at":null,"published_at":null,"updated_at":"2026-09-12T17:46:30+00:00","match_basis":"filters"} Full response metadata (including counts, interpretation and alternate links): { "projection_revision": 2, "snapshot": "40899ee732c8a9d86f9dcf2825f62031", "catalog_version": 22726, "snapshot_created_at": "2026-09-30T21:24:54+00:00", "snapshot_expires_at": "2026-10-01T21:24:54+00:00", "source_changed_at": "2026-09-30T21:24:47+00:00", "freshness_behavior": "materialized on first request after a committed source change; database triggers cover row writes and relationship writes", "source_id_sha256": "994fa5919fcfaa761d9e52bb21239a18675af0c2368c42c518c82742206b2c30", "source_content_sha256": "3be166ec97d00bfb58d3768897e742d25d3b57bcc642ed57e48a6daa26037627", "total_catalog_pieces": 6434, "schema_version": "2.0", "query": "", "normalized_query": "", "resolved_filters": { "piece_id": 2806, "timezone": "UTC" }, "sort": "relevance", "projection": "full", "total_matches": 1, "returned": 1, "page": 1, "per_page": 50, "total_pages": 1, "previous_page_url": null, "next_page_url": null, "end_of_results": true, "alternate_formats": { "html": "https://roadtovirtuosity.com/ai/catalog/pieces/2806?page=1&piece_id=2806&projection=full&snapshot=40899ee732c8a9d86f9dcf2825f62031", "json": "https://roadtovirtuosity.com/ai/catalog/pieces/2806.json?page=1&piece_id=2806&projection=full&snapshot=40899ee732c8a9d86f9dcf2825f62031", "text": "https://roadtovirtuosity.com/ai/catalog/pieces/2806.txt?page=1&piece_id=2806&projection=full&snapshot=40899ee732c8a9d86f9dcf2825f62031" }, "warnings": [ "Strict taxonomy filters exclude unattributed records; search title text separately before deciding something is missing.", "Work identity, musical sequence and completeness are unknown unless reviewed metadata is supplied. 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