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The Dual Keyboard Piano
The Dual Keyboard Piano gives you two simultaneous and independent views onto the same 88 key keyboard. This allows you to reach more keys at once without having to scroll the keyboard, and to control both parts of the Pattern Arpeggiator. The keys can be optionally labelled (in App Settings) with the appropriate key and octave number to aid navigation.

Press a key to play it. Unlike the Single Keyboard Piano, the Dual Keyboard Piano does not determine velocity from the part of the key you touch. Velocity is fixed at maximum.

Above each keyboard you will see a Navigation Bar:

Use this to navigate around each piano keyboard. A small representation of the keyboard shows visually the area covered by the current window, and you can tap on this representation to jump quickly to an area of the keyboard, or even slide a finger around to drag the visible window. You also have finer control via the following icons:

Scroll down by one octave.

Scroll down by one key.

Scroll up by one key.

Scroll up by one octave.

At the top of the screen you will find icons to access the various main application functions. These icons are consistent across all the three piano interfaces:

Display the Store / Retrieve Dialog.

Display the Undo Dialog.

Display the Piano Settings Screen.

Change to the next piano interface type.

Below that there are three panels used to control the piano:

This panel allows you to toggle the Soft and Sustain pedals, and turn the arpeggiator and drum machine on and off. (Note that the drums can be optionally configured in App Settings to automatically start whenever a song is started)
The Soft button has an additional function for instruments that route modulation to filter cutoff (synth sounds) where the piano Soft filter effect is replaced by a standard synthesizer low-pass filter. With those instruments, the Soft button is redundant and instead enables an LFO ("Low Frequency Oscillator") on the filter cutoff. This gives a slow pulsing effect to synth sounds without the need to record the modulation changes by hand. The modulation wheel is disabled while the Soft button is lit.

This panel allows you to navigate around your currently recorded song:

Jump back one bar.

Jump forward one bar.

Start the song playing (press this button again to stop).

Start recording (press again to stop).

You can also tap and hold down on the bar screen itself and then drag to the left or right to quickly set the current bar in the song, or double tap on the screen to instantly jump back to the start of the song.

Press left and right arrows to change instrument.

In any piano screen, you can tap on the Current Instrument screen to restart the current bar. Use this to keep Pianist Pro manually in sync with an external rhythm. See the Tempo section in Piano Settings for more on synchronising tempo.

A pitch / modulation wheel and swell pedal can be optionally displayed over the keyboard to add extra emphasis to the recording. This is configurable in the App Settings screen. Changes made to pitch and modulation will be recorded into the song. Note that pitch has no effect on the Piano or Electric Piano instruments, and modulation has no effect on the Piano.

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