Download Opus #1 Pro - The Midi Organ apk 2.9.2 free for Android smartphone

18 Jul
Opus #1 Pro - The Midi Organ

Posted by Dr. Achim Leubner in Music & Audio | July 18, 2016 | 7 Comments

Apk file size: 13.0 MB

Opus #1 Pro 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). For details, see

If you have questions, remarks or suggestions, mail us at [email protected]

-- 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

✓ Support for external keyboards and expanders

On devices with USB host support (e.g. Galaxy Nexus, Nexus 7, Acer A500, Asus TF101, ...) you can connect an external keyboard or midi expander. You can play Opus #1 from your external keyboard, organ midi console or play an external sound generator from Opus #1.

✓ Midi file player included

The included midi player works with any standard midi file stored on your android device. You can output the midi events via Midi/USB (if your device supports it; see above)

-- Features --------

✓ Support for lowest latency possible on your android device.
✓ 15 different organ ranks sampled from a real church organ (coming from Joseph Basquin /
✓ Audio recording feature & sharing of recordings
✓ Midi In&Out via USB on devices that support USB-Host/OTG (e.g. Asus TF101, Acer A500, Galaxy Nexus, Nexus 7, ...) for Standard Midi/USB devices (i.e. devices that do not need a driver on Windows/Mac)
✓ A registration view to easily switch registers while playing on an organ console
✓ Includes a midi file player
✓ 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 and C2-D4 pedal range just like the original organ
✓ Multitouch only limited by your device
✓ Scrollable on-screen keyboard/pedal
✓ Settings for the number of displayed keys, optional vibrate on touch, ...
✓ Runs on android >= 4.0.3, phones and tablets
✓ No ads

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

✓ Needs ca. 15.7 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.INTERNET to be able to download midi files if selected e.g. in a browser
android.permission.MODIFY_AUDIO_SETTINGS for better audio support (OpenSL) to enable mail apps to forward midi file attaments to this app to check the license

Whats new

    + Updates for Android 6/Marshmallow and 7/Nougat
    + Updates to latest Google recommendations regarding low latency audio
    + Various performance improvements
    + Bug fixes
    + Updated libraries

Dr. Achim Leubner part of our Music & Audio and have average installs from 500 to 1000. Last Update July 18, 2016. Google play rating is 91.1111. Current verison is 2.9.2. Actual size 13.0 MB.

Download opus-1-pro-the-midi-organ.apk 13.0 MB


Brent Hausman

Sounds wonderful I have an 7.85 Inch tablet next book 8 I can play the keys, you can adjust how many keys are on the screen

Henry Metcalfe

Just like the real thing!!! This has brilliant sound files and I find it easy to use on both my devices! This is brilliant

A Google User

Sweet! Sounds great on my Nexus 7 with an OTG adapter and a USB MIDI mini keyboard: Smallest authentic pipe organ emulator ever! Really appreciate the nasard and tierce ranks. Low latency and generous polyphony too. A wonderful app for organ enthusiasts!

A Google User

IT SOUNDS REALLY GOOD! I picked up your Piano app earlier and saw this one as well. Had to have both. I'm bowled over with the variety of sounds that I can get out of this for just a little over $3.00. It also has the same great MIDI interface that works well with an MPK Mini on my Prime.

A Google User

I am hooked ! I love this app. Lovely organ sound great fun to plsy around with.

A Google User

Thanks guys Exellent start! Hope to see soon more stops with more options like transpose, reverbs etc. So we can use it more pro. via midi

A Google User

Wow, and WOW! again!!!! I'm a hobby musician, been playing various instruments for 40 years. I played your free version for 5 minutes and purchased the Pro version. GREAT work, thanks for this!

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