Use an external keyboard with Logic Pro for iPad
Logic Pro for iPad utilizes the iPad’s onscreen keyboard for any text input. In addition, you can connect an external keyboard via Bluetooth or USB, or turn on Universal Control to use the keyboard of your nearby computer. See Universal Control: Use a single keyboard and mouse between Mac and iPad.
You can use the external keyboard for the following tasks:
Text input: Whenever a step in Logic Pro requires text input, you can start typing on your external keyboard. The onscreen keyboard is not displayed.
Numeric input: You can use the keyboard to type in numbers whenever the numeric input dialog is visible.
Modifier keys: You can use the external keyboard together with Multi-Touch gestures on your iPad. Pressing the Shift key on the keyboard turns on the Multiple Select button
, and pressing the Option key turns on the Copy button 
(or the Stepped Automation button 
in Automation view or the On/Off button 
in the Mixer).Keyboard shortcuts: Logic Pro for iPad supports many keyboard shortcuts that you can trigger with your external keyboard. See Overview of keyboard shortcuts.
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