The Touch Bar in Logic works a lot like you might expect if you’ve used it with other Apple apps. It borrows some of the features that first launched in GarageBand and Final Cut Pro, for instance, with an overview of the timeline and some buttons for making quick adjustments of various settings for the selected track. But it also includes fully customizable buttons that can be assigned to keyboard shortcuts!
This is one useful reason for having a Touch Bar. I use Touché from Red Sweater .
Touch Bar for Everyone.