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

    Tags: free all file player , kirchenorgel , organ , opus #1 , free pipe organ , organ freeware , midi orgel opus , usb host and device simultaneously. , pipe organ games

    Users review

    from 1.262 reviews



    Users comments

    Bob Hope

    by Bob Hope

    Aug 03, 2017  |  "Awesome"

    This is what I want

    Ananghermansha Hermansha

    by Ananghermansha Hermansha

    Jun 11, 2017  |  "Awesome"


    Md Ali

    by Md Ali

    Feb 25, 2017  |  "Poor"

    Totally worst time

    Adam Crane Crane

    by Adam Crane Crane

    Feb 12, 2017  |  "Awesome"

    Adam Crane In Ipswich UK

    A Google user

    by A Google user

    Nov 24, 2016  |  "OK"

    How can I undo last update? Distortion, and a pinging background sound of key is held for more than 2 seconds... H E L P. I used to love this app. :(

    Brandon Kharkongor

    by Brandon Kharkongor

    Nov 23, 2016  |  "Awesome"

    I really like this app.... It sound like a real organ.... Best organ app