Feature enhanced sibling of the "Unpopular Music Player"
About this app
Instead of "Artists" and "Songs" in pop(ular) music, this program uses the metadata composer and grouping to organise the music in works (e.g. a symphony) consisting of movements (parts of this work).
Further, no text is truncated, i.e. long movement names or performer lists will take as much space on the screen as they need to be visible in full length.
This application might be seen as an advanced version of the Unpopular Music Player, with added music database query functionality and further enhancements.
The program can work together with the Classical Music Tagger and the Classical Music Scanner.
Features:
* Starts with album list and cover art. * Nowhere text is truncated (with "..."), even the longest work and movement descriptions get the space they need. * Composer and grouping (work, movements) * Views: albums, composers, works, genres, performers, folders * Filter for combinations of composer, genre etc. * Text search * Play lists * "gapless" playback (as far as supported by Android) * If configured, uses database built by Classical Music Scanner, otherwise the system database. * Call Classical Music Tagger or Classical Music Scanner directly from app * Meta data transferred via Bluetooth to car radio * Six colour themes * Scalable UI, also for tablets * Portrait and landscape orientation * Perfect gendering-ism, especially designed for useresses and users from German civil service.
Licensed under GPL-3.0-only, by Andreas Kromke.
What's New in v2.66
Imported from the F-Droid repository index.
- - Attempt to avoid bookmark malfunction.
- - Toast warning on killed background service.
- - SDK 36.
- (Version 2.66)
Version history
Sep 3, 2025 · 2.8 MB · Android API 21–36 · code 77
Imported from the F-Droid repository index.
- - Attempt to avoid bookmark malfunction.
- - Toast warning on killed background service.
- - SDK 36.
- (Version 2.66)
SHA-256 440f3c9b260a4666c4ac027947bfbe4c673739aa933017a6566c72482855ea2c
Aug 1, 2025 · 2.7 MB · Android API 21–34 · code 76
Imported from the F-Droid repository index.
- - Attempt to repair redrawing glitches with bookmarks (unfinished).
- - New Gradle and libraries.
- - Use git commit date and time for application information instead of system build time.
- - Track pick malfunction solved that was introduced with version 2.64.
- (Version 2.65)
SHA-256 08ad76230189e2e39cbdf6c6aa8b0acddf2fc2924024f6c816803d76449e2269
Dec 4, 2024 · 2.7 MB · Android API 21–34 · code 75
Imported from the F-Droid repository index.
- - Automatic bookmark handling improved.
- - Play/Pause state inconsistency avoided.
- (Version 2.64)
SHA-256 69c238b55717b2bd6eab7e1431ea6661b248caae7f907e4828a7ca75e27a8ca6
Will it run on your device?
78%
- Runs on a broad range of modern Android versions.
- ABI coverage is focused on newer 64-bit devices.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be de.kromke.andreas.opus1musicplayer is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 2.65 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Opus 1 Music Player first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Opus 1 Music Player, and a listing is removed when the evidence for it stops holding up.
Get Opus 1 Music Player
Every source we list for de.kromke.andreas.opus1musicplayer is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
440f3c9b260a4666c4ac027947bfbe4c673739aa933017a6566c72482855ea2c
Signing certificate
e9e3010de74a792037e8c068ac3a72f6d1f5eadd7a3c7ad656fa9d0c437fd9b1
Permissions Required
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
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