JamKoo - Play Mix Record by Lulu Xie v1.0

Everything is well explain in the App Store description.
So here is a little resume of it (Full App Store description at the end of this post)

JamKoo is an easy to use synthesizer (pre-installed with a number of fine-tuned and rich sound sources, from a comprehensive instrument package containing 138 instruments to 7 Chinese musical instrument packages with outstanding sound.) which is designed for live performance and practice.
Note that you can also add your own instrument library and download the Soundfont format library to your own JamKoo library
.
Main features:
- Import backing track music from iTunes or the file browser.
- Support octave change.
- Adjustable MIDI input channel.
- 3 velocity curves.
- Pitch bend adjustment.
- Support USB, Bluetooth MIDI devices.
- Transposition, instrument volume, reverb, backing volume, main volume adjustment.
- Layered recording with backing track, as well as solo recording.
- Pre-installed a set of high quality comprehensive sound library.
- Pre-installed a set of Chinese musical instrument library.
- Pro version users can add third party Soundfont format sound library. Collapse

Application Scenario
- Piano: Connect your keyboard to iPad, iPhone via USB-MIDI or Bluetooth MIDI. Play and record your performance with this app, share the recording with your teacher.
- Wind MIDI controller: add a background music, pick a saxophone or trumpet tone. Add some reverb FX, and practice anytime without disturbing others.
- Electronic drum practice, import a classic rock track, pick a drum kit, and record your performance while adjusting the background volume and minimizing the reverb FX of the instrument. Recordings can be sent to other members of the band.
​
In conclusion, JamKoo is really cool, simple to use and for a cheap price it becomes a SF2 file player.
My only regrets are that you can't import SF2 files without to use iTunes files sharing, because I am using an iPad only.
The second one is the Audio Routing. No IAA or Audiobus.
It will be really great in a future update to have the AUv3 version.
A Super App!

Download on the App Store

Price Free / Offers in App Purchases Author Lulu Xie Type Keyboard SF2 file player Version 1.0

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The App Store description

JamKoo is an easy to use synthesizer, which is designed for live performance and practice.

Application Scenario

- Piano: Connect your keyboard to iPad, iPhone via USB-MIDI or Bluetooth MIDI. Play and record your performance with this app, share the recording with your teacher. The piano sound and tuning is more realistic than an ordinary electric piano.

- Wind MIDI controller: add a background music, pick a saxophone or trumpet tone. Add some reverb FX, and practice anytime without disturbing others.

- Electronic drum practice, import a classic rock track, pick a drum kit, and record your performance while adjusting the background volume and minimizing the reverb FX of the instrument. Recordings can be sent to other members of the band.

Elegant and powerful

Designed for music practice and live performances, the user who likes music is freed from the complexity of recording interfaces and can focus on the music itself. Sophistication doesn't necessitate complexity.

Built-in high quality and deep sound library
Pre-installed with a number of fine-tuned and rich sound sources, from a comprehensive instrument package containing 138 instruments to 7 Chinese musical instrument packages with outstanding sound. This is a musical weapon at your fingertips.

Add your own instrument library
If the pre-installed hundreds of instruments are not enough, you can also add your own instrument library and download the Soundfont format library to your own JamKoo library.

Main features:

- Import backing track music from iTunes or the file browser.
- Support octave change.
- Adjustable MIDI input channel.
- 3 velocity curves.
- Pitch bend adjustment.
- Support USB, Bluetooth MIDI devices.
- Transposition, instrument volume, reverb, backing volume, main volume adjustment.
- Layered recording with backing track, as well as solo recording.
- Pre-installed a set of high quality comprehensive sound library.
- Pre-installed a set of Chinese musical instrument library.
- Pro version users can add third party Soundfont format sound library.