Opus #1 Free - The Pipe Organ



    Opus #1 Free uses samples from a real church organ (coming from for a great realistic sound.

    You can download demo recordings and a trial version from
    We also offer other music apps, including a version of the full Stiehr Mockers organ (the "Ultimate" version) with Midi/USB. For details, see

    If you have questions, remarks or suggestions, mail us at

    -- Highlights ----------

    ✓ Low latency audio

    Low latency audio is a weak spot of Android (see ). Opus #1 provides lowest possible latency on your device.

    ✓ High quality samples for all contained stops

    -- Features --------

    ✓ Support for lowest latency possible on your android device.
    ✓ 9 different organ ranks sampled from a real church organ (coming from Joseph Basquin /
    ✓ 4 predefined combinations
    ✓ Various reverb settings (no reverb, small church, medium church, cathedral, ...)
    ✓ The ranks can be played together like on a real organ; up to 512 pipes simultaneously
    ✓ 4 1/2 octave keyboard range just like the original organ
    ✓ Multitouch only limited by your device
    ✓ Scrollable on-screen keyboard
    ✓ Settings for the number of displayed keys, optional vibrate on touch, ...
    ✓ Runs on android >= 4.0.3, phones and tablets

    -- Usage Tips / Hardware requirements --------

    ✓ Needs ca. 9.5 MB for the organ samples
    ✓ Use headphones / external speakers for better sound; phones speakers are not made for organs
    ✓ For the best sound, the device should have at least a 1GHz single core processor

    ---- Free vs. Pro vs. Ultimate ------------

    Opus #1 Pro provides all the features of the Free version plus:

    ✓ Audio recording feature & sharing of recordings
    ✓ 15 stops instead of 9
    ✓ Manual + pedal
    ✓ Registration view
    ✓ Midi via USB
    ✓ Midi player
    ✓ No ads

    Opus #1 Ultimate provides all the features of the Pro version plus:

    ✓ 21 stops (the full organ) instead of 15
    ✓ 2 manuals + pedal
    ✓ 5 combinations

    -- Permissions --------

    android.permission.WRITE_EXTERNAL_STORAGE to extract the sound samples onto the sdcard
    android.permission.VIBRATE for vibrate on touch support
    android.permission.MODIFY_AUDIO_SETTINGS for better audio support (OpenSL)
    android.permission.INTERNET and android.permission.ACCESS_NETWORK_STATE to load ads

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