Excuse my ignorance.
Is it possible to recreate a velocity-sensitive Ableton drum rack style situation with the Digitakt with an external midi keyboard controller?
i.e. Assign all the samples loaded into audio tracks 1-8 to be played like a drum rack, so for example, kick sample is on C3, snare on C# etc. instead of chromatically playing kick sample on track 1, snare on track 2.
Hope I’m being clear 
I believe that would depend on your controller
“8.4 MIDI NOTES
Some functions can be triggered by sending MIDI note values from an external MIDI device (a MIDI keyboard
or a computer, for example) connected to the Digitakt via a standard MIDI cable or a USB 2.0 A to B
connector cable.
Of the 128 notes in the standard MIDI range, Note numbers 0–8 correspond to notes C0 through to G0, the
leftmost octave (which is sometimes called C-2–G-2 in certain applications). These notes will trigger the
sound of track 1 through track 8, respectively (provided they are set to their default channels 1-8). These
notes values map to each of the eight tracks, regardless of which track is active.
MIDI note numbers 12–59 (corresponding to notes C1–B4, the second through to fifth octaves in the MIDI
range) will trigger the sound of the active track in any of its 49 chromatic variations (as if played by the
[TRIG] keys in CHROMATIC mode, see section below), from lowest to highest pitch.
MIDI program change messages 0–127 will select pattern 1–128 (A01–H16) on the Digitakt. Additionally,
MIDI CC and NRPN messages can be sent to control various aspects of the Digitakt. For more information,
please see “APPENDIX A: MIDI” on page 66.”
source
Perfect!
Thank you!