If you want to create music in ProTools then it is recommended that you use a MIDI controller keyboard. This way you can easily play your compositions on an actual keyboard. However, if you want to use your Mac keyboard as a MIDI device, then you need to get a MIDI keyboard controller application. These are basic applications that mimic an actual MIDI keyboard with the keys on your Mac laptop or computer. Once you have a MIDI keyboard controller installed you can start using it in ProTools.
Click "Applications," then launch your MIDI keyboard controller application. If you need to download one, three options are located in Resources.
Click "Applications," then click "ProTools."
Select a MIDI track in ProTools. ProTools will automatically recognise new MIDI controllers.
Click your MIDI controller program from the Dock.
Press the keys on your keyboard to use it as if it were a piano keyboard. Your application should show a diagram to show each key representation.