# Library overview What each of the four library tabs shows, and how to group, filter, and search your scores. > Type: Overview · Status: Beta · Platforms: iPadOS 17+ · Last reviewed: 2026-07-18 ## The four library tabs The library opens on a row of four tabs. Each one changes which scores the list below shows — your grouping, filters, and search carry over unchanged when you switch. | Tab | What it shows | | --- | --- | | `My Library` | Scores you imported or scanned. This is your private collection, and the default tab. | | `Catalog` | The shared classical catalog — about 25,000 major works, ranked by importance. Browsing it does not add anything to your library. | | `Calibrated` | Only the pieces that already have a calibration, so they are ready for score following. | | `All` | Your library and the catalog together, in one alphabetical list. | > **Note:** Calibrated pieces have their own tab instead of a filter chip — there is no "Calibrated" entry in the filter row. ## Group the list On a fresh install the list is grouped by **Period**, with **Composer** and then **Form** nested inside each era. That arrangement is the built-in `Period · Composer · Form` view (see [Saved views](#saved-views)); you can change any part of it. The `Group by` row sets the top-level grouping. Tap one of: - **Composer** — one section per composer. - **Recent** — most recently opened first. - **Period** — sections by era (Baroque, Romantic, Impressionist, …). - **Form** — sections by form (sonata, nocturne, fugue, …). - **Instrument** — sections by instrumentation. - **A → Z** — one flat alphabetical list, no sections. ### Nest a second level To divide each top-level section further (for example Period, then Composer inside each era): 1. In the `Group by` row, tap `Add group`. 2. Pick an axis: Period, Composer, Form, Instrument, Tonality, Year, A → Z, Catalog, Favorite, or Duration. The new level appears as a chip after the top-level grouping. Tap the chip to adjust it: - `Group by` — swap this level to a different axis. - `Show as` — how the sub-sections render: `New panel`, `Sub-column`, `Open section` (always expanded), or `Drop-down` with a `Collapsed` or `Expanded` default. - `Remove` — delete this level. You can chain several levels; the whole arrangement persists between launches. ## Filter the list Tap `FILTERS` to expand the filter chips (tap it again to collapse them). Chips appear in this order: Instrument, Period, Form, Difficulty, Importance, Tonality, `⭐ Starred`, `PDF only`, `XML only`. Each chip opens a small panel; active chips stay highlighted. - **Instrument, Period, Form, Tonality** — pick any number of values. Tonality lists all 30 major and minor keys, plus any other key spellings already present in your own files. - **Difficulty** — one band at a time: Beginner, Intermediate, Advanced, or Virtuoso. Picking a second band replaces the first; tapping the active band clears it. - **Importance** — an editorial 0–100 score of how central a work is (50 Notable · 75 Major · 90 Canon). Separate sliders filter by piece importance and by composer importance. - **`⭐ Starred`** — only pieces you starred. - **`PDF only` / `XML only`** — only pieces whose file is a PDF, or only pieces with playable MusicXML. Tap the ✕ at the end of the row (`Clear filters`) to drop every active filter at once. > **Limit:** `PDF only` is available only on the `My Library` tab. ## Search The `Search…` field matches every word you type, and it understands structured terms, so you can mix them freely: - **Composer** — tolerates typos and accents (`chopin`, `debusy`). - **Year** — a 4-digit year matches works composed around it; if nothing matches the exact year, the search widens to the era (`1722` surfaces Baroque works). - **Era, form, key, instrument** — `baroque`, `nocturne`, `c minor`, `violin`. - **Catalog number** — `BWV 846`, `Op. 27 No. 2`, `K. 331`. For example, `chopin nocturne c minor` narrows to exactly that intersection. ## Saved views A saved view is a snapshot of your grouping chain and every filter. Views live as chips on their own row above `Group by`; tap a chip to apply it. The app ships with one built-in view, `Period · Composer · Form`, which is also the fresh-install default — you can't rename or delete it, but your own views sit next to it on the same row. To save the current arrangement: 1. Set up the grouping and filters you want. As soon as they differ from every saved view, a `💾 Save this view` chip appears at the end of the row. 2. Tap it. The view is saved immediately, named after its grouping chain. 3. To pick your own name, long-press the new chip and choose `Rename`. Long-pressing one of your view chips also offers `Update with current view` (overwrite it with the current arrangement) and delete. When your current arrangement already matches a saved view, the end of the row shows a `+` chip instead: it clears everything to a blank template (flat A → Z list, no filters) so you can build a new view from scratch. A saved view does **not** record which tab you were on or your search text, so one view works across tabs. Saved views sync to your other devices through iCloud. ## Where to go next - [Organize](organize.md) — merge duplicates, link sets, combine movements, and let the cleanup assistant suggest fixes. - [Collections](collections.md) — group pieces into named collections and setlists. - [Metadata](metadata.md) — fix titles, composers, and how titles are formatted. - [Sync](sync.md) — what syncs across devices through iCloud, and what stays on this device.