Your iPhone becomes conductors baton!
MIDI music is played in synchronization with your shake or tap to your device.
Downloaded MIDI files also can be played. (.mid and .zip are supported.) Select this app by "Open in..." after file download completes.
How to use:
1. Select MIDI file to play from list. (Long press deletes file)
2. After file is loaded, shake or tap your device.
Swing detection:
This app detect swing motion by using accelerometer in your device.
Tap:
Tap around the beats count label (eg: 0/1393)