Novation Launchkey 49 script by LowerShotower.
Notes from the creator:
"Novation Launchkey 49 working leds knobs and sliders, buttons. All works a little bit different from original ableton or bitwig scripts. Main grid in mix mode has two rows i.e. 16 pads. You can rec, start,stop clips by pushing pads. Round buttons (RB) launch/stop the whole scene. Nav buttons move grid. Rec button starts metronome and overdub in clips. In my approach loop button works as shift button."
Read more on the creator's Github page.