Musk MIDI Keyboard: Your expandable MIDI keyboard!

* Use the included General MIDI sound font or import your own sound libraries
* Play on the multi-touch keyboard (8 octaves)
* Send notes to other MIDI apps or keyboards
* Receive notes from external MIDI sources
* Track MIDI notes and channels on the keyboard
* Load sound libraries and change MIDI channels to different sounds
* Highlight individual channels visually and acoustically
* Let the app speak the pitch class (pitch class ) of the notes (C = 0 , C # = 1, ..., H = 11) in your own language. (Requires the iOS 7 voices)

The following MIDI sources and targets are supported and can be individually turned on and off:
* Network-MIDI (WiFi) : So you can connect the app to other devices (eg. Mac, iPhone, iPad)
* MIDI devices: you can connect your devices via Camera Connection Kit and USB-MIDI (e.g. a MIDI keyboard)
* Core MIDI-enabled apps : You can, for example, display the notes of a MIDI player and use the sounds of other apps.
* MIDI via Bluetooth (iOS8)
* Experimental MIDI via Gamekit support.

Full Core-MIDI support:
* Other apps publish their MIDI input and output ports: you activate the connection in this app. Active connections are reestablished, if possible, at app restart.
* This app publishes a MIDI input and output: you activate the link in another app or the other app automatically activates the connection.

Setting and filter adjustment options (per channel):
* Show notes
* Hear notes
* Instrument sound
* Instrument and voice volume
* Accepting program and volume change commands (via MIDI input)

Import of sound libraries via:
* ITunes: transmission via Mac or PC
* ICloud: synchronizes the data on all your Apple devices. (Network connection required)
* Other Apps from the manufacturer this app: All of his apps access to the same iCloud directory. (No network connection required)
* Safari: search for a website that offers SoundFonts. Click on the file. Wait until it is downloaded. Then select this app in the "Open In" dialog.
* Mail: Select the attachment and select this app in the "Open In" dialog.
* Other apps: use the "Open In" dialog. (Dropbox, Google Drive, SkyDrive)

Supported file formats and extensions:
* Sound fonts (sf2)
* Downloadable Sounds (dls)
* Logic Pro EXS-24 instrument Files (exs)
* Audio Unit Presets (aupreset)
* Zip files (zip)

Inter-App-Audio, AudioBus 3 and Audio Unit support:
You can use the audio output of the app in other apps:
* Record a MIDI performance in Garageband, AudioShare or other apps.
* Add sound effects in GarageBand, VoiceSynth or other apps.
* Use a sound font as an Audio Unit in a host app. (Experimental)

* Speech output can not be sent to other apps.
* Playing many notes per second can push older devices to their limits. When you hear a scraping noise, try terminating other apps.

Have fun!

What’s New

Version 2.5

Audiobus 3 support.
iOS 13 support and bug fixes.
Dark mode.

Ratings and Reviews

Mini Jimi ,

Doesn't work

Ugly GUI, unintuitive control settings, and most importantly, fails to connect to my Macbook either by Wi-Fi or Bluetooth for use as an actual MIDI keyboard. Overpriced at $.99, and overrated at one star.


Joerg Garbers
47.9 MB

Requires iOS 11.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, German

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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