I’ve worked for this artist many times and I’m usually sent backing tracks with a simple chord sheet and a brief to just play something that fits. On this occasion, I was given a guide MIDI bass which sounded great so I just added some touches to it and that was all that was needed.
I sent him four signals: a DI, body, bridge and fingerboard microphone signals. That gives more than enough options to mix a full, gorgeous sounding organic double bass sound. You can hear some of that fingerboard mic right at the intro giving more of the, well… fingerboard sound.