Earlier this year, Ableton Live released Live 11, the most recent version of their music production software. Live 11 comes with lots of updated plugins and new features like comping as well as a handful of new devices. Live 11 also features enhanced MPE controller capability which is great for creating more expression in your music. Live 11 now makes it possible for you to record velocity, pitch, and vibrato automations on your MIDI tracks in real time. If you own an Ableton Push controller, this expanded MPE sensitivity really turns your gear into an expressive musical paintbrush.
MPE stands for MIDI Polyphonic Expression. MPE controllers use multiple dimensions of MIDI data like velocity, pitch, and vibrato to make your music more expressive. There are many MPE controllers on the market but the ROLI Seaboard is a great example of a MIDI controller that is capable of capturing your subtle expressions in real time. As you play, your MPE keyboard captures information from your playing style. Your MPE keyboard and Ableton Live can pick up data like the strength of your notes (velocity), and if you create some vibrato using your figures as a string instrument player would do, Ableton Live can transpose this data into lines of automation that you can later readjust.
Below is a quick demo of the ROLI Seaboard Block, a smaller version of the ROLI Seaboard. This demonstration showcases the sort of effects and plugin manipulation you can achieve with an MPE controller: