You may have missed this part of the Ableton Live manual (from 26.2.2 Mapping to MIDI Notes):
Hint: Session View slots can be assigned to a MIDI note range for chromatic playing: First play the root key (this is the key that will play the clip at its default transposition), and then, while holding down the root key, hold one key below the root and one above it to define the limits of the range.To check this feature you should have a look at “Freddy’s Tech Tips 011: Chromatically Triggering Clips” which explains the feature a little bit more. And if you’re at it check out the other Tech Tips by Freddy as well. They are worth your time and really helpful.
-mE
i had forgotten about this…. good one!
Digging for gold and knowledge in the small print 🙂