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By Markus Sigg

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StrandOrgan lets you play Lars Palo's sampleset of the Strand pipe organ of the church in Kalvträsk, Sweden, on a MIDI keyboard attached to your iOS device. The Kalvträsk Church sampleset is provided by Lars Palo under the Creative Commons Attribution-ShareAlike 2.5 license, see If you would like to use the sampleset with other software, you can get it at

For more information, please consult the app support page , the Napo documentation at and in particular the Napo user manual at .

For hearing sound examples of the app, please visit the support page .

What's New in Version 8.4

This is a maintenance release which updates the app to Napo 4.10. The changes are:

- Audiobus updated to v2.3.1.
- Bugfix: MIDI switch definitions are now cleared when you load or reset settings.
- Bugfix: There was an issue that led to annoying error messages when a combination bank was deleted that was currently selected in the Console view.
- Performance optimisations for the screen keyboard.
- A new, less intrusive log mechanism for MIDI connection / disconnection messages and the like.
- The badge number of the app icon now displays a countdown when the app is running in the background, to indicate that the app can receive MIDI messages and create sound.
- MIDI velocity can now be used to control the volume of the pipe sound.


iPhone Screenshot 1
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iPad Screenshot 1
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This app is designed for both iPhone and iPad
  • Free
  • Category: Music
  • Updated:
  • Version: 8.4
  • Size: 563 MB
  • Languages: English, German
  • Developer:

Compatibility: Requires iOS 5.1.1 or later. Compatible with iPhone, iPad and iPod touch.

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