Change your digital piano or synthesizer into an arranger keyboard with realtime auto-accompaniment. Or use your iOS device on its own as a realtime arranger and be creative while traveling

Connect your iPad, iPhone or iPod to your keyboard instrument with the camera connection kit and an USB AB cable or a MIDI interface cable (depending on what your keyboard uses for MIDI). Then start One Man Band and select the Settings button. Choose the MIDI In and MIDI Out port to your keyboard and press Done. Now select the red Presets button and choose one of the style/voice combinations.

When you play a chord on the leftside of your keyboard instrument, the accompaniment will start to play. You can play the melody on the right side of the keyboard, it will have harmonies and instrument layers depending on the chosen voice. Select different style variations (Main, Fill, Intro, Ending) while you play. Switch to different accompaniment styles and melody voices with the buttons on top. Press Record and set the switch on to record MIDI files.

When you don't have a keyboard instrument (yet) or can't make the connection at the moment, then there are options to use the iPad/iPhone/iPod as an accompaniment instrument on its own. Select the soundfont player at Settings/Ports/MidiOut and use the virtual keyboard to play chords and melody.

One Man Band utilises standard style files compatible with the styles used in Yamaha PSR, DGX and Tyros arranger keyboards. There are thousands of these styles available on the internet. When you copy a zip-file with styles to OMB (download, email, icloud), the styles will be placed in a new style folder with the same name as the zip-file.

The panel with 56 buttons is customisable. You can assign a function, voice, preset, chord or note to each of the buttons (except for the button top left) and create submenus with again 56 buttons each. Create your own voices with harmonies and instrument layering.

There is also a free version (One Man Band Lite) in the App Store.

What's New

Version 1.2

New transposition functions.
Fix for handling MIDI file recordings.

Ratings and Reviews

Good, but needs important features


I have been a Windows OMB user for over 10 years now, And while it’s not the perfect piece of software, it fulfills a need that no other application comes close to. I have been waiting years now for this, or some other similar program to come to iOS, since I use the iOS music ecosystem for many of my musical creation needs.

Now that it’s here finally, I am overjoyed, and have been playing with it quite a bit. It currently lacks though, some important functionality that has come to be expected with most iOS MIDI apps - namely, background operation (so you can operate it in the background with a midi keyboard - left hand - and use an onboard iOS instrument to play melody in the foreground - right hand) and IAA and/or Audiobus compatibility. Once these things are in place, I see this as being a very successful app. Until then, it will have limited use. But still way better than nothing!

Great app but need some more features please !


-Background play
-Tempo Synch or Clock (for internal or External midi)
-Modern Theme(Like Real button )
-Midi mixer

Thank you .


Jos Maas
2.7 MB
Requires iOS 9.1 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© copyright by Jos Maas


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