This quick walkthrough shows how to use Key Map Mode in Ableton Live to control a track's mute button straight from your computer keyboard. Click the Key Map Mode switch and every mappable parameter lights up orange, giving you a clear view of what you can assign.
From there, click the mute button on the track you want to control, then hit a key on your keyboard, like the number 4, to link them. That key now toggles the mute on and off, and the mapping shows up in the browser for reference.
This is a fast way to build a hands-on performance setup without touching a MIDI controller. Mapping mutes to keys means you can flip parts of a track in and out live, or punch through arrangement ideas during a session, using nothing but your laptop.